Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: twosmoke595 on August 29, 2012, 02:28:00 AM

Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 29, 2012, 02:28:00 AM
some of you may have seen my other thread about getting this bike but for those who haven't here is a little rundown.

its a 2009 ktm 125sx bought the bike for 1500, as is, does not run, when kicking it over the crank on the right side definitely has a noise it shouldn't have, it came with the title, all paperwork. As far as i can tell the only aftermarket parts on this bike are the fmf factory fatty and the shorty silencer

got a little time to tear into it today, and so far it looks like the bike is just super dirty and in need of a good cleaning, I'd be surprised if it has ever seen soap and water

here she is before tear down


one thing i noticed when taking it apart is that there is actually very little hardware compared to jap bikes, this being said, this is the first non jap bike Ive ever owned. So everything is going to be a little different

here is a little shot of the motor


a shot after finally managing to get the seat/side plates/rear fender off


there is only 2 bolts, one on each side of the side plate/rear fender combo, and 1 bolt that holds the seat on under the rear fender ( i can already tell that this was a bad idea on ktm's part bc that bolt will get filled with mud/dirt very easily) but overall i'm pretty impressed with the ingenuity of ktm, very simple gets it done design. for instance, i didn't realize that the left air box cover pops off to reveal the air filter GENIUS!! after 40+ years for each manufacturer you'd think they would put something like this on their modern bikes, makes it so much easier than having to take off seat, and jam your hand in the air box and hoping the wing nut doesn't get dropped down in the air box.


my plans are to put a new 12 or 13' front fender and # plate on this bike


again i was kind of surprised at just how little hardware there is on this bike, very simplistic even for a 2 stroke, it seems like there are bolts all over the jap bikes also the bolts on this ktm are pretty much 2 different sizes mainly on the body work and main parts of the bike, pretty sure the entire engine is size 8 and 10 in metric, and the smaller golden bolts are 6's
one thing i also noticed is just how much lighter the seat is on this bike compared to my previous one's (Yamaha yz250, and Honda cr125)


3 bolts later/and one large nut i didn't realize that it needed to be taken off, and the seat/side plates and rear fender were off


the foot pegs are about a half an inch longer and about the same wider than the ones on my previous cr125, which is good for my size 12 boot


pretty cool that these bikes come stock with a hydrolic clutch, tried a yz250 2 stroke that had one and i loved it. only issue is that the paint on the clutch perch is starting to chip off, i think while i have my frame powder coated i'll get the perch done as well


here's the exhaust right when i took it off the bike, i really want a carbon scalvini down the road or maybe I'll just call fmf and buy their titanium end cap that they sell on their ti2, or if i feel like wasting money ask them to make a custom carbon one



i was honestly just thinking of scraping the silencer and pipe bc i was unsure of the condition, but once i got it off the bike i realized that its in great shape, just needed some cleaning, i also plan on getting hi temp flat black paint and sanding the factory fatty down and painting it, as i really don't want to buy another pipe if i don't have to

there's not much a good wash, and the combination of a brillow pad, and some very fine steel wool can't fix and make look like new. Here is the same exhaust after the cleaning



this is all i could get to today

i plan on sending my motor to Michael Soudas who is the TM dealer Cycle Playground in Pennsylvania to get it completely rebuild, and maybe a little port cleanup while he's in there

while the motor is being done, i plan on going to SMS ktm in Denton, TX to get the frame powdercoated orange(as well as some other small bits) also while I'm there trade my stock black wheel-set and some cash for a silver wheel-set (never been a fan of the black rims)

while everything is out I'm going to go over the remainder of the bike start cleaning it up really good, get some orange or blue engine hoses, asv levers, new grips, and hardware throughout as every piece of hardware seems to be rusted

then later on (i haven't decided what I'm going to do yet) possibly get white or orange plastic, with custom graphics done up, also i would like to get a larger see through tank and a headlight for whenever i start doing enduros/scrambles. Been wanting to do them for a really long time but Ive always been too busy to participate.

Obviously its in the beginning stages right now, but more will come very soon
i'm going to try and keep you guys updated as much as possible, as well as keep a price tab (even though i really dont want to see the end price) just so i can show you what can be done when buying a bike that is less than par

also please check out my fb page for updates on me and our race team
https://www.facebook.com/twosmoke595
https://www.facebook.com/pages/TCG-Racin/181481391906041

Title: Official 2009 KTM 125sx bike build
Post by: ridered125 on August 29, 2012, 02:52:46 AM
Two weeks ago, I bought a brand new 2009 KTM 125 SX. It was a leftover. Great price, too. I've been to the track on it once. The manual requires a 5-hour break-in and instructions not to run it wide open during those 5 hours. Really hard to do on a 125!

One thing that jumped out is the motor. It has strong, strong mid and top. Suspension seems fair. The handling is great. If you are in a turn and want to cut deeper, just think about it and you're there. No wiggling, washing or standing up. It corners really well.

Looking forward to your build.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 29, 2012, 03:02:47 AM
Two weeks ago, I bought a brand new 2009 KTM 125 SX. It was a leftover. Great price, too. I've been to the track on it once. The manual requires a 5-hour break-in and instructions not to run it wide open during those 5 hours. Really hard to do on a 125!

One thing that jumped out is the motor. It has strong, strong mid and top. Suspension seems fair. The handling is great. If you are in a turn and want to cut deeper, just think about it and you're there. No wiggling, washing or standing up. It corners really well.

Looking forward to your build.

cool! thanks for that, been trying to find somebodies input on this bike, (or more than a few inputs actually)
not that it really matters on a 125 but how was low end response?
Title: Official 2009 KTM 125sx bike build
Post by: rookie on August 29, 2012, 03:18:02 AM
i got the 2010 150sx, looks identical

for the seat bolt right under the fender, to prevent mud and stuff
and paste a duct tape over the bolt and there ya got it!

Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 29, 2012, 03:21:33 AM
i got the 2010 150sx, looks identical

for the seat bolt right under the fender, to prevent mud and stuff
and paste a duct tape over the bolt and there ya got it!

any quirks that you've noticed? anything in particular with the bike that i could change to make better?
Title: Official 2009 KTM 125sx bike build
Post by: ridered125 on August 29, 2012, 03:31:47 AM
I haven't taken it out on a trail, so not real sure about low end. On an MX track it's usually wound up enough to pull well out of a turn. Gearing seems a little high stock (13/50).

There's not a lot of info out there on this bike. In 09 everyone was testing and buying the 150. Owner's manual says it has an adjustable ignition. You take off the gas tank and unplug a wire to make it smoother, more of a slick conditions setting.
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on August 29, 2012, 10:41:14 AM
Cool bike now, but dump a grand into it and it'll be a real show pony. Looking forward to the end result
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 29, 2012, 01:14:01 PM
Cool bike now, but dump a grand into it and it'll be a real show pony. Looking forward to the end result

i'm afraid i wont be able to stop at a grand  :P :P
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on August 29, 2012, 11:22:07 PM
Can't wait to see how this one turns out, thanks twosmoke, I think doin em up is nearly as much fun as ridin em :D :D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 30, 2012, 12:10:16 AM
Can't wait to see how this one turns out, thanks twosmoke, I think doin em up is nearly as much fun as ridin em :D :D

well all i can say right now is that i'm having doing it lol now whether or not that continues is another story
i like working on bikes, even better when you make a thrashed one new again.

i should be getting the bike down to the frame tomorrow hopefully (fingers crossed) and then taking it to get pc'd as well as sending motor out monday

i'll keep yall updated  8)
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on August 30, 2012, 12:13:09 AM
sending the motor to pro circuit?
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on August 30, 2012, 12:15:30 AM
my bad did not see where till just now.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 30, 2012, 03:58:22 AM
just a few small updates as i take it apart

she's starting to get naked pretty fast


still amazed at just how little hardware there is on this bike, and the hardware that is there is super light, the shrouds are held on my a handful of plastic screws that weigh nothing, the tank is held on my 1 bolt


i dont really understand ktm's logic by making these fork guards impossible to get off without either cutting them, or having to take the wheel and brake off



im pretty sure ktm didn't put the petcock on backwards so you can't see if its on or off when the tank is on the bike. it had to have been the previous owner


took tank off, didn't realize the bolt in the middle of the tank was holding it on


the only snag that i had was that i need some star sockets/wrenches, the ones that we have are not big enough, and unfortunately it didn't come with the stock tool set, but it came with the stock tool bag...go figure :P


hopefully getting the remainder taken apart and going to denton this weekend to drop off frame, hopefully swap my wheels + cash for a brand new take off set of silver wheels, and probably get a few things sand blasted and/or pc'd
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on August 30, 2012, 08:55:24 AM
I truly do hate those bloody star drive screws. It just doesn't make sense. By the looks of the dust thats congeeled on the fuel tank there it hasn't been stripped in a while. But on the plus side it looks like you might get a few more hours out of those tires. Looking good mate  8) The shot of that brutal brembo and fat ass rotor would be suitable to an Abrams tank I reckon :P
Title: Official 2009 KTM 125sx bike build
Post by: racer142 on August 30, 2012, 07:17:35 PM
Actually my brother Bought an 05 Honda crf250r and the petcock was turned that way and it's how it was supposed to be. The fuel line came out the back and straight to the carb if u turned it around it would kink and wouldn't reach. Said on and off on it and everything u just couldn't see it
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on August 30, 2012, 09:01:40 PM
Actually my brother Bought an 05 Honda crf250r and the petcock was turned that way and it's how it was supposed to be. The fuel line came out the back and straight to the carb if u turned it around it would kink and wouldn't reach. Said on and off on it and everything u just couldn't see it

ya i can understand it being like that, but still ive never seen it before, i'll just turn it around, bc the line comes out of the bottom and it wont cause any issues
Title: Official 2009 KTM 125sx bike build
Post by: racer142 on August 31, 2012, 05:44:37 AM
I Hear ya I would too if it didn't cause any issues. Personally I didn't like it on his bio u always had to fight to get it on and off. But I was always told it was so ur boot or something didn't shut the gas off while riding but ive never in my life had that issue
Title: Official 2009 KTM 125sx bike build
Post by: nom de guerre on August 31, 2012, 12:08:47 PM
That fuel valve is correct and the reasoning they are "backwards" is for resistance to dirt/dust/mud getting into the face of the valve and buggering it all up.

Good thread and look forward to the completed bike.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 01, 2012, 02:27:30 AM
i will be unable to get anything other than tearing the bike down done this weekend. i might be able to ship the motor early this coming week

just have too much stuff going on, but i get paid on wednesday, and it'll give me more time to tear everything down and assess it even further, so that helps a little
Title: Official 2009 KTM 125sx bike build
Post by: motoxr377 on September 01, 2012, 04:36:57 PM
That fuel valve is correct and the reasoning they are "backwards" is for resistance to dirt/dust/mud getting into the face of the valve and buggering it all up.

Good thread and look forward to the completed bike.

That, and has anybody ever broken the lever on one? Pain in the ass. Just another reason they are turned around.
Title: Official 2009 KTM 125sx bike build
Post by: ridered125 on September 02, 2012, 03:55:17 AM
Rode my 2009 125 SX today. I posted earlier about it.  Bought the bike brand new as a leftover two weeks ago. Twosmoke you asked about the low end. I rode it on a really technical trail, first- and second-gear place with tight trees, logs everywhere, kind of like an endurocross course. It was 100 degrees, too. Most MXers ride this place one time and don't come back.

The 125 has low end. But it's geared tall stock for tight trail work. I had to clutch it some but it got me out of every jam and pulled along pretty good. I didn't hit it too hard, didn't have any barkbusters on it. The suspension was a lot better than I thought on the trails. Skid plate, couple of more teeth in the back and bark busters and it will be good.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 02, 2012, 04:04:40 AM
Rode my 2009 125 SX today. I posted earlier about it.  Bought the bike brand new as a leftover two weeks ago. Twosmoke you asked about the low end. I rode it on a really technical trail, first- and second-gear place with tight trees, logs everywhere, kind of like an endurocross course. It was 100 degrees, too. Most MXers ride this place one time and don't come back.

The 125 has low end. But it's geared tall stock for tight trail work. I had to clutch it some but it got me out of every jam and pulled along pretty good. I didn't hit it too hard, didn't have any barkbusters on it. The suspension was a lot better than I thought on the trails. Skid plate, couple of more teeth in the back and bark busters and it will be good.

thanks for that man, ya obviously its not a trail bike but its nice to know converting wouldn't be too much trouble, as i plan to do it all with this bike

have you noticed anything that you'd change, you found quirky about the bike?
Title: Official 2009 KTM 125sx bike build
Post by: ridered125 on September 02, 2012, 09:15:09 PM
Not yet. It's an amazing little bike.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 03, 2012, 03:14:10 AM
ok guys a little update

i didnt get much done tonight

i finally got some torx sockets from the auto parts store, which allowed me to take the subframe off


i was having some issues with getting the little allen head bolts that hold the plastic guards on, off. i didnt realize they were threaded in there, but then they had a little rubber grommet thing around the actual bolt which held it in place even though you could freely spin the bolt itself. that took me about 15-20 minutes to figure out and finally grab some pliers and pull them out.

i drained the radiator fluid and engine oil, for some reason there are 2 drain holes for the oil, which made draining it an adventure, i only found this out through reading through the manual bc there was no drain bolt on the bottom like so many jap bikes before this one, there is one on each side of the motor

also i wasn't sure about draining the rad fluid, which bolt to drain it from, ended up looking in the manual for it also


while i was taking the chain off, i realized that there was no clip on the masterlink, just the masterlink itself and the base plate link that the clip goes on, its a good thing it hasn't been able to run, or else i might've run it and the chain flies off and crack the case.  :o

i got the subframe/airbox off, frame guards off, drained fluids, and took the chain off tonight

tomorrow when i have more time i will hope to get the radiators off, exhaust off, and once i do that then i'll get the rear wheel, swingarm, shock, and engine off pretty easily, so far there's only been like 4 different size bolts/nuts throughout this entire motorcycle which is pretty cool

then hopefully send engine out once i get motor out, then take wheels/frame/suspension to she shop   ;D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 04, 2012, 04:09:00 AM
update

got the radiators off without much fuss at all




just 2 bolts on each side, loosen the radiator hoses and they're off pretty easily. one thing i noticed is that the top hose that connects the 2 rad's goes through the frame? i dont know how i'd get it out to change it


got the pipe off, i'm not going to worry about the dents, as they're not big at all, i am going to have it blasted and then painted flat black


as you can tell, there's been a definite lack of care for this bike


got rear wheel off



shock off, it definitely needs a rebuild



swingarm came off easy




carb off, ready to get cleaned




parts packed up, bolts labled and bagged


how she sits now


tomorrow i plan to take engine out, get front end off, take wiring harness off and start cleaning everything up really good
going to make the trip to drop frame off, maybe suspension if the shop can do it, and wheels, then send engine out either thursday or friday


Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on September 04, 2012, 10:50:24 PM
Nice work mate. But you had to drain engine oil? Thats not a good sign :P

It looks like its gonna be a ripper bike with some TLC and time, looking forward to videos :D
Title: Official 2009 KTM 125sx bike build
Post by: citabjockey on September 05, 2012, 08:52:25 PM
Thanks for the pix/documentation! I love this stuff. Have Fun!
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 05, 2012, 10:35:34 PM
Nice work mate. But you had to drain engine oil? Thats not a good sign :P

It looks like its gonna be a ripper bike with some TLC and time, looking forward to videos :D

i think you think i meant strain engine oil, all i did was empty it so its not as heavy when shipped. either way its getting shipped out to get fixed :D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 05, 2012, 10:36:45 PM
Thanks for the pix/documentation! I love this stuff. Have Fun!

thanks for the kind words! i love it when people do it to, makes the finished project look like that much better i think

i'll keep you updated :D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 07, 2012, 04:12:39 AM
a little update guys!

got the engine out, crated it up (i say crate loosely) and shipped out it to michael at cycle playground
over the next few days i'm going to start cleaning up the remainder of the bike, and finish taking the bike down to the frame









our works engine crate that will keep the engine nice and safe on its trip to and from


Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on September 07, 2012, 12:01:08 PM
That's a beautiful engine crate ;)
Title: Official 2009 KTM 125sx bike build
Post by: Coop on September 07, 2012, 01:42:23 PM
Ha! That crate is awesome.

Nice work so far man.
Title: Official 2009 KTM 125sx bike build
Post by: TMKIWI on September 09, 2012, 03:24:15 AM
That's a beautiful engine crate ;)

That "crate" should be storing other things mate. ;)
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 09, 2012, 04:56:34 AM
That's a beautiful engine crate ;)

That "crate" should be storing other things mate. ;)

haha it works great actually, we've shipped quite a few motors in it, and everything holds up fine  8)
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 11, 2012, 03:29:55 AM
alright guys, i know its been a couple days but here's a little update

i got the rest of the bike tore down
here's the front wheel


with wheel off


forks off




got the 125 all tore down. Going to drop frame/suspension/hopefully swap wheels, tomorrow at SMS KTM !!! SO PUMPED TO GET THIS THING STARTED ON!!!

now, the teardown is all done, now its just cleaning up parts, start replacing hardware, and the best part, getting it all put back together

now, this is what i have planned, getting frame/triples powdered orange. I plan to swap SMS my wheels plus cash for brand new take-off's of a 2012, these wheels are silver with brand new everything, tires/sprockets/etc. If they're asking too much, sho
uld i have them powder the hubs orange too? or will that be too much orange? if they're asking too much i'll take apart wheels, get hubs orange, then buy spokes/rims/tires and build them myself.

What are your thoughts? is orange frame/triple/hubs too much orange? this bike will have orange plastic as well

never really liked orange before, buts the more i look at the factory ktm's the better they look :O



Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on September 11, 2012, 11:09:18 PM
Orange hubs sound good, are you doin theframe orange too? I think that would look real nice, everything orange  :D apart from the seat, rims etc ;)
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 12, 2012, 12:02:36 AM
Orange hubs sound good, are you doin theframe orange too? I think that would look real nice, everything orange  :D apart from the seat, rims etc ;)

not sure what i'm going to do on the wheels yet, but yes the frame is going to be orange, the triples are going to stay black. If all goes well then i'll have silver rims/hubs.

just dropped the frame off today actually hopefully i'll get it back next week
Title: Official 2009 KTM 125sx bike build
Post by: citabjockey on September 12, 2012, 06:21:44 AM
Orange Seat? Looks ok to me!



Orange hubs sound good, are you doin theframe orange too? I think that would look real nice, everything orange  :D apart from the seat, rims etc ;)
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on September 12, 2012, 08:23:35 AM
I like the idea of silver rims, spokes but orange hubs and pc the clamps orange, that sounds pretty damn sweet.

Coming along awesomely, I love your work.
Title: Official 2009 KTM 125sx bike build
Post by: alo.pendla on September 12, 2012, 01:03:29 PM
Hey Mate!

Uhhh cant wait do see it :) Ill think the black/silver rims looks good and orange clamps/ frame looks nice im sure! And seat, i would keep it black its a lot nicer.
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on September 12, 2012, 02:48:36 PM
Orange Seat? Looks ok to me!



Orange hubs sound good, are you doin theframe orange too? I think that would look real nice, everything orange  :D apart from the seat, rims etc ;)

Your entire bike looks more than OK! I love it!!
Title: Official 2009 KTM 125sx bike build
Post by: citabjockey on September 12, 2012, 05:35:54 PM
If you think it looks nice you should ride it! Very eye opening experience!

I can't wait to see this 125SX completed, going to be very cool.

Orange Seat? Looks ok to me!
Orange hubs sound good, are you doin theframe orange too? I think that would look real nice, everything orange  :D apart from the seat, rims etc ;)

Your entire bike looks more than OK! I love it!!
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on September 18, 2012, 09:30:49 PM
little update

just started cleaning some parts, got quite a bit done, just need to do exhaust, brake assemblies, and radiators

the swingarm was super dirty, the dirt was caked on the bottom of it, for some reason it has a little checkerboard pattern on the bottom that will collect dirt, took be quite a while to clean the swinger, but it turned out good i think.



frame just got in powdercoat today and should be done pretty soon

i'll update more when i start getting stuff back :)
Title: Official 2009 KTM 125sx bike build
Post by: shanes on September 19, 2012, 10:55:22 AM
What colour did you powder coat the frame , im about to tear my SX250 down ill get that done orange :-}}
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on December 15, 2012, 03:59:08 AM
hey guys!!! long time no post on here :D
i bet you think i just left this bike in a pile and haven't done anything with it! you're sorta right!! it was in a trash pile, but now its in a new parts pile

ok so...long story short, school and work have kept me from doing anything on this until today. I'm in my last semester for my bachelor's it has taken a ton of time and i haven't done anything until today on this.. excuses over, lets do this!!!

so here we go, i got my frame back, engine back, suspension, quite a few other little bits and pieces so the build commences! and it all went together quite well

frame powdercoating, silver wheels, and some oem hardware was right around 450 shipped to me

engine completely redone by michael S (cycle playground) in PA for around 750 shipped


got the engine in, stem bearings greased, suspension on, ignition setup


look ma, so linkage!!!
got suspension hooked up by FCR in ohio, got a nice deal, on all the works stuff besides coatings on the lower legs and shock shaft, works bladder in shock and gold valves in forks, as well as new springs setup for my weight....750 shipped :) it would've been less but he said everything in the shock was beat all to hell ( i saw this coming and was expecting the worst)


picked up a sweet bracket that allows the fit of the 13' front fender and # plate, just a mock up to see how it looked...SUCCESS looks badass and i cant wait till its finished


got suspension on, loc-tite everything that needed it, front wheel and bars on (anybody want to trade these bars for a set of mcgrath bend fat bars?) i like the straight bar feeling of the mcgrath bars, not a lot of sweep back.

Plans and parts needed:
complete rebuild of the brake assemblies, going to disassemble them and get them soda blasted to knock all the gunk off
for some reason since i let the rear axle sit, the axle block seized on the axle, i'm soaking it now so hopefully i wont have to buy a new one.
need new radiator hoses, didnt notice when i was taking it apart but noticed today that they were cracking
need quite a bit of new hardware (chain guide, shock, brake assemblies, lower fork lug bolts, footpeg pins, etc)
airbox is cracked so going to get probably orange airbox, with the orange sides, or i may just get it black
white rear fender
orange shrowds
pleated seat cover
cycra plastic skid plate
new chain
get exhaust blasted and paint it black, whole new exhaust mounting hardware
new grips, crossbar pad
graphics
shock sox front and rear, they have this really cool cover for the pds system which i'm going to get
mcgrath bend bars (will probably get the mcgrath bars when i bend these)

Unnecessary wants:
orange zeta steering stem nuts
orange clutch, brake covers
carbon fiber frame guards ( i cant find anything anywhere!!! and i dont know why, seems like they would've made cf parts for this thing)
i really want a scalvini carbon silencer, but my fmf is basically brand new, and if not the scalvini i want the ti shorty for it, but again my regular shorty is perfectly fine
i dont mind the push button and turn gas cap, but a threaded one would be nice too
it would be nice to get some bigger sharper pegs, but the stock ones are huge compared to the ones on the cr125 i had

so far everything has gone perfectly, none of the holes in the frame need to be made to fit the bolts. ie. sand down the pc coating, and all im doing now is the waiting game. i ordered the the majority of the parts today, and hopefully will have this thing up and running by the end of this coming week!

let me know what you think!!




Title: Official 2009 KTM 125sx bike build
Post by: citabjockey on December 15, 2012, 05:15:25 AM
Very sweet looking ride you have there! Looking forward to more updates!
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on December 15, 2012, 08:43:34 AM
Very sweet looking ride you have there! Looking forward to more updates!

Definitely. Love the pc frame too.
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on December 15, 2012, 10:02:54 PM
orange frame was defenitley the way to go twosmoke. did you have mods done to motor?
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on December 16, 2012, 12:00:43 AM
orange frame was defenitley the way to go twosmoke. did you have mods done to motor?

ya i was pleasantly surprised by the outcome of the frame, plus i got rid of a bunch of black in the process

aside from a complete rebuild it received the following

full wiseco clutch as the stock one was smoked and the basket was notched badly
port polish cylinder, head was cleaned up and shaved. nothing too drastic just a basic job for a stronger pull
carb had oval bore done
all meant to run pump gas
and i have a fmf fatty and shorty to finish it up :)
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on December 16, 2012, 08:58:24 PM
This thing is goin to be one bad piece of machinery! I knew it would look cool with the orange, and with the suspension and motor mods you are goin to have one hell of a bike, top job man, lookin forward to the finished product ;)
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on December 16, 2012, 10:16:49 PM
This thing is goin to be one bad piece of machinery! I knew it would look cool with the orange, and with the suspension and motor mods you are goin to have one hell of a bike, top job man, lookin forward to the finished product ;)

me too!! now just waiting on santa in his bigass brown truck to get here
Title: Official 2009 KTM 125sx bike build
Post by: marc.winder on December 17, 2012, 12:26:28 PM
Looking forward to seeing how this turns out!
Title: Official 2009 KTM 125sx bike build
Post by: Helmut Clasen on December 17, 2012, 05:05:13 PM
This thing is goin to be one bad piece of machinery! I knew it would look cool with the orange, and with the suspension and motor mods you are goin to have one hell of a bike, top job man, lookin forward to the finished product ;)

me too!! now just waiting on santa in his bigass brown truck to get here


Just a few little things about your KTM.
make sure your coil to the frame has a good ground(after PC.)
The gastap facing to the inside is trick from pros,so you can not exidently knock the taplever into CLOSED position.
From your carb,take the two UPPER breezerhoses,cut them,insert a T connect only ONE hose of the T to a fuelhose and lead that hose into the airbox.(which is the dryest place on the bike) so you have always at least ONE hose to bring AIR to the carb avoiding a vacuum in the floatbowl.If you dont like the ( bloody) TORXE screws,you can replace them ALL with the great M 6ers with the M 8 mm head.Many customers of mine ask me to do that to there NEW KTMs,
Ahhh there are so many more tricks....lol
Oh,your cable under the tank to change the timing ???KTM is offering a switch attachment to be installed to the handlebar.So at any situation you can mod from torque to reving at a click with you thumb. ;D ;D ;D Happy Holidays,and let us know how your Baby is doing....
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on December 17, 2012, 07:52:23 PM
thanks for all those tips helmut! i appreciate it  8)


a little update, i decided to say "F&%k it" and i ordered a complete moto hose kit, from radiator hoses to carb hoses, the works. All in blue. Decided against orange because i think it would be a little overboard with orange frame orange hoses orange plastic etc
Title: Official 2009 KTM 125sx bike build
Post by: TORO1968 on December 18, 2012, 05:58:40 AM

Unnecessary wants:
orange zeta steering stem nuts
orange clutch, brake covers
carbon fiber frame guards ( i cant find anything anywhere!!! and i dont know why, seems like they would've made cf parts for this thing)
i really want a scalvini carbon silencer, but my fmf is basically brand new, and if not the scalvini i want the ti shorty for it, but again my regular shorty is perfectly fine
i dont mind the push button and turn gas cap, but a threaded one would be nice too
it would be nice to get some bigger sharper pegs, but the stock ones are huge compared to the ones on the cr125 i had

so far everything has gone perfectly, none of the holes in the frame need to be made to fit the bolts. ie. sand down the pc coating, and all im doing now is the waiting game. i ordered the the majority of the parts today, and hopefully will have this thing up and running by the end of this coming week!

let me know what you think!!

Pro Carbon Racing (UK-based company) makes carbon fiber frame guards for your KTM...  http://www.pro-carbonracing.co.uk/ktmw.htm

They seem to make really nice stuff, but I can't speak from personal experience.  Hope that helps!
Title: Official 2009 KTM 125sx bike build
Post by: TORO1968 on December 18, 2012, 05:59:24 AM
Oh, you're build is looking great!  Love the orange PC frame!
Title: Official 2009 KTM 125sx bike build
Post by: gpnewhouse7 on March 04, 2013, 07:24:41 PM

Unnecessary wants:
orange zeta steering stem nuts
orange clutch, brake covers
carbon fiber frame guards ( i cant find anything anywhere!!! and i dont know why, seems like they would've made cf parts for this thing)
i really want a scalvini carbon silencer, but my fmf is basically brand new, and if not the scalvini i want the ti shorty for it, but again my regular shorty is perfectly fine
i dont mind the push button and turn gas cap, but a threaded one would be nice too
it would be nice to get some bigger sharper pegs, but the stock ones are huge compared to the ones on the cr125 i had

so far everything has gone perfectly, none of the holes in the frame need to be made to fit the bolts. ie. sand down the pc coating, and all im doing now is the waiting game. i ordered the the majority of the parts today, and hopefully will have this thing up and running by the end of this coming week!

let me know what you think!!

Pro Carbon Racing (UK-based company) makes carbon fiber frame guards for your KTM...  http://www.pro-carbonracing.co.uk/ktmw.htm

They seem to make really nice stuff, but I can't speak from personal experience.  Hope that helps!

I've had their frame guards on a few of my bikes and they've worked really well and always looked smart (not worn out after ten minutes like some).
Title: Official 2009 KTM 125sx bike build
Post by: lh#57 on January 22, 2013, 04:31:25 PM
Love these posts, can't wait to see how it turns out
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on January 22, 2013, 09:42:30 PM
takin ya time arent ya? I've been waitin to see the finished product for ages now ::)
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on January 22, 2013, 10:14:15 PM
yeah, i'm begining to think twosmoke is moonlighting as a fourstroke jockey.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on January 23, 2013, 01:31:28 AM
takin ya time arent ya? I've been waitin to see the finished product for ages now ::)

ya i know, ive had to pay 1 grand for school so that set me back, dont worry guys its still going just taken longer than expected
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on January 23, 2013, 01:31:55 AM
yeah, i'm begining to think twosmoke is moonlighting as a fourstroke jockey.

lol really? that just shows how much you know about me  ;)
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on January 23, 2013, 02:58:49 AM
actually just put in a big order tonight so i'll update once i get everything in, once it is, i'll have a first start up video for you guys  :-* :-*
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on February 02, 2013, 01:35:40 AM
cool stuff twosmoke, glad to see it coming along. Some times it takes a little while, but in the end  it will be worth it when you get to ride it.

one of the main reasons it took a while is because last semester was really tough in school, so i did nothing but school, i was very limited on what i did, i knew that if i started messing with the bike i would've really got distracted and not done very well. but now that i'm out for a little while i'm back at it :)

yes i cant wait really, i can tell its going to be an amazing bike to ride
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 02, 2013, 03:46:57 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on February 02, 2013, 10:13:58 PM
good to see twosmoke, a bike like that deserves your full attention  :D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on February 03, 2013, 12:17:03 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 03, 2013, 01:39:47 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing

With porting and head work plus race gas plus the full pc system you'd be looking at about 42 peak I would think.

Thats f***ing fast.
Title: Official 2009 KTM 125sx bike build
Post by: 2T Institute on February 03, 2013, 04:25:01 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing

With porting and head work plus race gas plus the full pc system you'd be looking at about 42 peak I would think.

Thats f***ing fast.

When was the last time you had a bike on a dyno?
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 03, 2013, 08:56:05 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing

With porting and head work plus race gas plus the full pc system you'd be looking at about 42 peak I would think.

Thats f***ing fast.

When was the last time you had a bike on a dyno?

When was the last time you thought I gave a good god damn about your opinion? I said I would THINK mate! I was ESTIMATING!
Title: Official 2009 KTM 125sx bike build
Post by: Formerly knownas Premixed on February 03, 2013, 03:19:54 PM
All that pipe needs is abrasive pads and elbow grease.  They have both of those at Home Depot. 
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on February 03, 2013, 08:34:53 PM
All that pipe needs is abrasive pads and elbow grease.  They have both of those at Home Depot.

problem is i wouldn't keep up with it, otherwise i'd do it, that's the only reason for painting it
Title: Official 2009 KTM 125sx bike build
Post by: 2T Institute on February 04, 2013, 04:34:57 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing

With porting and head work plus race gas plus the full pc system you'd be looking at about 42 peak I would think.

Thats f***ing fast.

When was the last time you had a bike on a dyno?

When was the last time you thought I gave a good god damn about your opinion? I said I would THINK mate! I was ESTIMATING!

So you have never actualy had a bike on the dyno? Estimates are based on some experience.
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 04, 2013, 05:00:16 AM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing

With porting and head work plus race gas plus the full pc system you'd be looking at about 42 peak I would think.

Thats f***ing fast.

When was the last time you had a bike on a dyno?

When was the last time you thought I gave a good god damn about your opinion? I said I would THINK mate! I was ESTIMATING!

So you have never actualy had a bike on the dyno? Estimates are based on some experience.

False. Estimate is just a fancy word for guess. And a guess is based on either a quick and very rough maths add up, some other form of logical process or a number pulled out of the blue entirely.

His bike makes 38 horsepower bone stock according to mxa. A pipe and silencer will often yield a gain about 1-2 horsepower. Head mods that require race gas will probably get a further 1-2. Plus race gas and you've got about 42.

Now I'm not interested in hijacking twosmokes thread, so take your provocative, pedantic attitude somewhere away from me.
Title: Official 2009 KTM 125sx bike build
Post by: evo550 on February 04, 2013, 05:14:13 AM
Lozza...stop being so f$%king condesending. You may have  a wealth of knowledge on the 2t subject, but speaking down to people doesn't help your cause.
Title: Official 2009 KTM 125sx bike build
Post by: shanes on February 04, 2013, 06:06:29 AM
go and put it on the Dyno and post the graph that will stop the second guessing
Title: Official 2009 KTM 125sx bike build
Post by: msmola2002 on February 04, 2013, 07:25:48 AM
go and put it on the Dyno and post the graph that will stop the second guessing

Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 04, 2013, 07:31:40 AM
That makes me dizzy to look at...
Title: Official 2009 KTM 125sx bike build
Post by: Brap on February 04, 2013, 02:38:58 PM
All that pipe needs is abrasive pads and elbow grease.  They have both of those at Home Depot.

I never put a protective coat on my pipe and it rusted in a few months, Then i went at it with some sandpaper and got it all perfect and covered it with some high temp clear. It came out kind of golden brown after the heat hit it, Its pretty good looking, I'll post some photos later
Title: Official 2009 KTM 125sx bike build
Post by: Brap on February 04, 2013, 02:42:02 PM
All that pipe needs is abrasive pads and elbow grease.  They have both of those at Home Depot.

problem is i wouldn't keep up with it, otherwise i'd do it, that's the only reason for painting it

Get some high temp clear engine paint from a local advanced auto parts and coat it twice kind of thick, the hot parts of the exhaust will have a golden brown tint to them but overall it looks nice
Title: Official 2009 KTM 125sx bike build
Post by: Formerly knownas Premixed on February 04, 2013, 02:47:32 PM
Good god, don't you guys spray your bikes with WD40 after you wash them?

 There is no need for spray paints and all that shit.  Wash your bike, and about every other ride, hit the pipe with an Scotch brite pad.  then spray some WD40 on it before you put it away.  It displaces water and keeps everything from rusting.  Buy the gallon jug of it at Lowes and use an old spray bottle.

It's your bike, do what you want with it, but I would never spray any sort of paint or anything on an FMF Factory finish pipe.
Title: Official 2009 KTM 125sx bike build
Post by: Brap on February 04, 2013, 02:55:48 PM
Oh, I'll have to try the WD40 thing, My pipes stock. I would have to agree if it was a FMF i would'nt touch it, Whats better a FMF combination or a Pro circuit with the 304?
Title: Official 2009 KTM 125sx bike build
Post by: Formerly knownas Premixed on February 04, 2013, 03:15:35 PM
Oh, I'll have to try the WD40 thing, My pipes stock. I would have to agree if it was a FMF i would'nt touch it, Whats better a FMF combination or a Pro circuit with the 304?


I think FMF's silencers are a little higher quality, and I think FMF uses a little better quality metal on their "factory" finish pipes.  but as far as performance? You'll never notice a difference in the 2.  Strictly quality, FMF. 

Scalvinis are only about 30 dollars more than FMF.
Title: Official 2009 KTM 125sx bike build
Post by: Super Trucker on February 04, 2013, 10:22:24 PM
KTMS 2008 125 made 38 horsepower accoridng to mxa. Thats as much as the 150 makes now and its newer. Thats pretty embarrassing for them. Anyway my point is they are rockets. Have fun :D

not to mention i have a little motor work and a fmf system, so maybe looking more towards 40? either way, it'll be way more than that turd of a stock cr i had, i rode a 03 yz 125 this past weekend and it was way snappier and accelerated quicker/cleaner than my cr ever thought about doing. the only thing the yz had was a pc system

i cannot stress how much i want to ride this thing   That,s odd  my  06 cr125 stock jug, with leaner jetting, pipe,rad valve  pulled  all   the  yz,s   and  ktm,s  easily  and  I weigh  170 plus  in my  birthday suit.  Please  don,t  paint  the  factory finish pipe, just  wd40  and scotch bright pad.  It,s   your  bike tho, whatever makes  ya happy.
Title: Official 2009 KTM 125sx bike build
Post by: TMKIWI on February 05, 2013, 04:30:02 AM
Good god, don't you guys spray your bikes with WD40 after you wash them?

 ;D

WD40 and scotch pad is all you ever need.
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 05, 2013, 10:20:32 AM
I like to think that scotch is all you ever need full stop.
Title: Official 2009 KTM 125sx bike build
Post by: Formerly knownas Premixed on February 05, 2013, 02:32:46 PM
You're not going to keep up with the finish on your FMF pipe? 

Then why bother with all the powdercoat, cosmetics, and building the thing at all man?  Just ride it and let it rot. :(

Blowing your bike off with an air compressor, and a light coat of W40 will keep a bike looking new for so long. 
Title: Official 2009 KTM 125sx bike build
Post by: JRod4928 on February 05, 2013, 02:37:27 PM
It's really not that hard to clean up a pipe. Seriously, scotchbrite or this, which is a little more aggressive: http://www.pepboys.com/product/details/209906/372/car_care/body_repair/abrasives/
Title: Official 2009 KTM 125sx bike build
Post by: Brap on February 05, 2013, 05:30:19 PM
You're not going to keep up with the finish on your FMF pipe? 

Then why bother with all the powdercoat, cosmetics, and building the thing at all man?  Just ride it and let it rot. :(

Blowing your bike off with an air compressor, and a light coat of W40 will keep a bike looking new for so long.

Would'nt the WD40 make it oily and slick?
Title: Official 2009 KTM 125sx bike build
Post by: cnrcpla on February 05, 2013, 08:53:49 PM
Quote

Would'nt the WD40 make it oily and slick?
That's why some people use it, especially on plastics, the dirt and hardened mud wont stick to it. And on metal surfaces it will keep water from pooling up and rusting the pipe, like wax on a car.
Title: Official 2009 KTM 125sx bike build
Post by: scotty dog on February 05, 2013, 10:01:47 PM
Good god, don't you guys spray your bikes with WD40 after you wash them?

 There is no need for spray paints and all that shit.  Wash your bike, and about every other ride, hit the pipe with an Scotch brite pad.  then spray some WD40 on it before you put it away.  It displaces water and keeps everything from rusting.  Buy the gallon jug of it at Lowes and use an old spray bottle.

It's your bike, do what you want with it, but I would never spray any sort of paint or anything on an FMF Factory finish pipe.
Agreed, not hard at all too keep a factory pipe lookin good.
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 06, 2013, 01:47:00 AM
I've found the ultimate plastic polishing deal is tyre shine. Works a treat for me.
Title: Official 2009 KTM 125sx bike build
Post by: Formerly knownas Premixed on February 06, 2013, 02:58:15 PM
You're not going to keep up with the finish on your FMF pipe? 

Then why bother with all the powdercoat, cosmetics, and building the thing at all man?  Just ride it and let it rot. :(

Blowing your bike off with an air compressor, and a light coat of W40 will keep a bike looking new for so long.

Would'nt the WD40 make it oily and slick?

That's right.  Hit everything but your grips and your seat cover.  DRag your brakes on the way down to the starting gate or you're in for a surprise in the first corner.  Trust me.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on February 12, 2013, 04:27:59 AM
alright guys so we have an electrical issue

I put a fresh plug in it and its not sparking, i dont know why.

Please let me know how i can fix this, besides going to a shop and spending over 150$ for 2 hours worth of mechanics time. (quoted by chip munn himself) JUST TO FIGURE OUT WHATS WRONG WITH IT

anything i can do to eliminate parts to see what they could and couldn't be?

any help would be appreciated
Title: Official 2009 KTM 125sx bike build
Post by: Super Trucker on February 12, 2013, 05:06:29 AM
    On steel  framed  bikes  sometimes   ya  have to  file  the  paint  off   where  the coil mounts.  To get  a good  connection   for spark.  I hope  it,s  something  small  like that  or   it,s   expensive   stuff   like stator, cdi.   I,m   no expert   tech  though.
Title: Official 2009 KTM 125sx bike build
Post by: jimaras Greece on February 12, 2013, 06:07:08 AM
you cant mezzure the ? with polymeter?
Title: Official 2009 KTM 125sx bike build
Post by: citabjockey on February 12, 2013, 07:06:36 AM
Was it sparking BEFORE you put the fresh plug in there?

Had to ask...

And I assume no spark with the "old" plug either?


alright guys so we have an electrical issue

I put a fresh plug in it and its not sparking, i dont know why.

Please let me know how i can fix this, besides going to a shop and spending over 150$ for 2 hours worth of mechanics time. (quoted by chip munn himself) JUST TO FIGURE OUT WHATS WRONG WITH IT

anything i can do to eliminate parts to see what they could and couldn't be?

any help would be appreciated
Title: Official 2009 KTM 125sx bike build
Post by: gpnewhouse7 on February 12, 2013, 12:16:50 PM
Unscre the plug cap and check to see if there is a spark coming down the wire, if there is then all you need is a plug cap which costs about £2, if it doesn't spark then your in trouble.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on February 12, 2013, 07:30:53 PM
i have no way of measuring it. 1. i dont have the tools, 2. i dont know what i'm doing

correct, it was not running when i bought it. I put a fresh plug in it because the one that was in there was burnt out already

i'll see if i can make any progress with this info
Title: Official 2009 KTM 125sx bike build
Post by: msmola2002 on February 12, 2013, 11:38:43 PM
http://www.harborfreight.com/7-function-multimeter-98025.html

start with the basics

you have less than zero chance of troubleshooting it without a multimeter. Unless you systematically replace every part in the igntion system one by one.
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on February 13, 2013, 02:28:40 AM
http://www.harborfreight.com/7-function-multimeter-98025.html

start with the basics

you have less than zero chance of troubleshooting it without a multimeter. Unless you systematically replace every part in the igntion system one by one.

This. Grab a multimetre, measure resistance. hopefully worst case scenario you need a new coil.
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on March 15, 2013, 09:17:33 PM
https://www.facebook.com/photo.php?v=4887659142559

This thing sounds ridiculous, I can tell its going to blow me cr125 out of the water, running a little rich (seeping out of the head a little). Might drop the clip one and mess with the air screw. But she runs strong. Going to take it for a spin once I tighten some stuff up.

I can't quite run it yet, got most everything on after this video, need some hardware and need a chain guide then i'll ride it
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on March 15, 2013, 10:36:46 PM
What was the electrical issue? And she sounds angry, better give her a good flogging :D
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on March 15, 2013, 11:01:26 PM
What was the electrical issue? And she sounds angry, better give her a good flogging :D

it had a dead coil, i took it to a mechanic and it took him 10 minutes to figure out what was wrong, a new coil and his work for 50$
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on March 15, 2013, 11:01:47 PM
its alive!
Title: Official 2009 KTM 125sx bike build
Post by: ktm150rippa on March 15, 2013, 11:23:56 PM
Not sure if you live close to Denton, I'm also a college student finishing up in Abilene (shoot me). Anyways when I get back in may me and some friends are gonna be riding all summer and we have access to quite a few private tracks. Holler at me if you ever want to tag along and meet some other ktm guys (we all ride out of SMS)
Title: Official 2009 KTM 125sx bike build
Post by: Stusmoke on March 15, 2013, 11:42:23 PM
its alive!



:D:D:D
Title: Official 2009 KTM 125sx bike build
Post by: _X_ on March 15, 2013, 11:44:32 PM
thats what i'm talk'n bout!
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on March 15, 2013, 11:51:35 PM
Not sure if you live close to Denton, I'm also a college student finishing up in Abilene (shoot me). Anyways when I get back in may me and some friends are gonna be riding all summer and we have access to quite a few private tracks. Holler at me if you ever want to tag along and meet some other ktm guys (we all ride out of SMS)

about 2.5 hours away, in temple. i got my frame done my sms
Title: Official 2009 KTM 125sx bike build
Post by: twosmoke595 on March 15, 2013, 11:52:32 PM
its alive!

i got home around 9pm last night and started it up  ( i live in a neighborhood with  old retired people) i fired her up and let it run for like 10 minutes, i was so excited.
Title: Official 2009 KTM 125sx bike build
Post by: Brap on March 17, 2013, 12:53:41 AM
I can't wait to start mine, I'm gonna be so pumped!   ;D