2001 CR 125 Engine options

[Recovered]

I see steel framed 95-97 CR125s on CL all the time for less than a grand.  Why dont you just get one, rebuild it, and put your newer forks/triples on it?  then you could use the front wheel/brake too.  You'd be just like Steve Lamson, only with more stopping power.

[Scooter T]

I called Lee today. He informed me that any engine from 98 up will be a direct bolt in for this chassis. So now the question will be finding the best value for this bike. My goal is to build the bike up without spending a lot of money on extras.
I currently ride a KTM 200xc in the woods. This will be my track bike this year?
I will be picking up the bike tomorrow morning and I will start documenting my progress for a build thread?I look forward to asking a lot of questions?

[xandyx]

for what i know, all the cases from 94 to 07 are the same and share the same bolt pattern, so it will bi a straight fit.

i own a 01 cr 125 and i broke the loeft side case because the chain broke up, and the engine case has the same part number for all those years.

i'd like to get old at least of a 94/97 gearbox to swap the 5speed to 6..

check this conversion http://metal-matrix.com/s/index4.html

you'll get a bike such competitive as a 90's cr with better handling, and you can find 94/97 tranny's pretty cheap on ebay, most of them in the states. to bad for me that they don't ship overseas..

[Super Trucker]

I would just stick with the 5 speed if your trying to keep the money down, the 5 speed is a tougher trans. I hope Lee is right about the 98 and up motor working, he said a 03 and up KX pipe fit 04 cr125,s and up, the 03 KX pipe is not even close to fitting on a 04 Cr 125. I  went out and bought 2  2003 KX pipes, Doma and HGS BUd, hope you have better luck. The head stay from another year will prob be different too.

[Scooter T]

Thanks for all of the replies to my Newbie post?.I picked up the bike last weekend and later missed out on a motor for the bike. Well I found a 99 that is complete and recently rebuilt. The best part is that it is close to home. Hopefully Lee is correct and this will bolt into my chassis. The only question is about the carb and radiator fitment. So I guess I will find out if this motor is still available?

[Recovered]

I wonder if the 98 YZ 6 speed will go into the 02+....

[burn1986]

Miedosoracing has a lot of time on CR rebuilds and deals with the air flow issue on the alum framed CR125s. Shawn36 is right, the engines after '97 weren't that much different, the problem was the air flow was restricted on the alum frames. Like I said, miedosoracing.com has everything you could need to make your '01 rip.

[Recovered]

My vote is still for the Steve Lamson model.