Update

[factoryX]

The rmz one was nice, but you can't beat the simple fab work with 03 and up kx125.

[Coop]

The problem (for me) with the 03 and up is I am not set up to weld aluminum. I can only weld steel here in my garage.

[factoryX]

Looks like steel to me, they use an aluminum sub frame? Here is specs on a 05:
http://www.bikez.com/motorcycles/kawasaki_kx_125_2005.php

[SachsGS]

Correct me if I am wrong but the KDX200 motor is smaller then a 250F powerplant so if the swingarm matched up you just have to fab up some front engine mount plates? Didn't somebody make 240 kits for KDX200s as well?

[factoryX]

yes, and thats why they can fit cr500 motors in there, however, the only issue is that you have to cut and weld in a Y piece on the frames. All you have to do for a 03 and up kx125, is cut the swing arm so the motor fits, either shim the swing arm so that kdx swing arm bolt fits, or drill out the cases so the larger KX125 bolt fits, and cut and weld in new motor mounts.   2002 and lower had issues with the gas tank hitting the head and you would have to cut the rear head stay and mold the tank inward with a heat gun. Now with 03 I have seen people cut the front head stay and others that leave it, so i am confused. lol

[Coop]

Looks like steel to me, they use an aluminum sub frame? Here is specs on a 05:
http://www.bikez.com/motorcycles/kawasaki_kx_125_2005.php

Yeah for some reason I had it stuck in my head the 03+ had an aluminum frame. Doh!

[factoryX]

Small update: Just waiting on "Uni-track" to show up, Trx250r FMF Q silencer successfully installed(see bottom of page one), Installed Pro Taper Pillow top grips, and Cleaned/oiled the air filter.

Things to do: clean the carb, buy a new air filter(Twin Air filter?), head pipe seal, possibly new side panels, buy new chain after few rides, and grease bearings.

Very sad news at kdxrider.net(R.I.P Indawoods).

[MyckMcClung]

No_toil and moose both make nice airfilters

[Coop]

Very sad news at kdxrider.net(R.I.P Indawoods).

Yeah definitely a shocker, 47 and dead from a heart attack. Very sad.

It's funny Myck mentioned No-Toil. Every time I suggest them (because I can get them cheap) people bash me and say they are junk. I do like Twin Air a lot, but I can buy two NT's for the cost of 1 Twin Air. I like to have 2-3 filters so I can easily swap them out and always keep a clean filter in the bike.

[factoryX]

I might buy a K&N, but idk. I saw no-toil at local mx shop, I might give them a shot.

[Coop]

I am not a K&N fan for dirtbikes. You need to ensure you clean your filter often when dirt riding and K&N's are a hassle to me to clean.

[factoryX]

thats why you buy a screen or outer wear.

[Coop]

You still have to clean them often. That filter skin only helps a little. I have used them.

[factoryX]

true, o-well the oem filter will have to do for right now. That was the dirtiest air filter/air box I have ever seen. Looks new as of now.

[MyckMcClung]

I use the pre oiled no-toil filters now, I've been using the No-Toil filter cleaner and oil for 10 years on twin airs, Moose, and  some maxim ready filters a couple years ago, the twin airs  gave me less than a year life span switching every week, short lived for a $25 filter. The ready filters lasted two cleanings. The Moose filters are still in good shape a year of cleanings every other weekend. I have a sponsorship w no toil so I got a couple of filters for my bike this year.
Funny thing, the look exactly like the Moose filters but with a No-Toil logo.