Maintenance & Technical > KX250 / KX125

KX125 Impressive

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kx666:
i am un able to look at thier web site at work (i dont have a flashplayer) but i think it was LA sleeve that has a 125 big bore kit.  the 125 to 150 convertion has been around for at least 3 yrs. i am sorry i dont have more info. i hope this helps.

FPMXer:
Just looked at LaSleeve's site and they only offer big bores for yamaha, honda and ktm.

kx666:
hmmmmm.....

i wonder if wisco makes large enough pistons.

kx666:
http://www.fueltechusa.com/kx_125cc_1994_to_2006.htm

theese guys offer the full service. i hav never used them... i have a local machine shop let me use the equipment on my bikes. i hope this helps. let me know what you find.

FPMXer:
I just took my top end to phathead racing last week and it's getting a 134cc treatment and will be done in 2 weeks. Total cost of kit, parts and labor is $385 OTD. Can't beat that one. But I already have the head and domes otherwise it's $500 for the same. Any bigger and you run into powervalve issues.

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