150cc piston spec

[50dude]

Does anyone know the specs of the 150 piston for the rmr125 style bikes (size, gudgion pin sze etc..)? Is it possible to buy the pistons seperately? I ask because i would prefer to get my current barrel bored out instead of buying a 150 one, because i can get it done free at a freinds workshop.

thanks

[humanbeing]

That chinese 150 kit in fleabay = diameter: 62mm / pin: 14mm
There's also weird solultion using Honda clone -- CG150/ CB150 (62mm/15mm) kit
http://www.motorfans.com.cn/bbs/t_432525_1.htm

[50dude]

hi humanbeing, thanks alot for the info, very helpful :) .the CG kit might be a bit too much work though :L Do you know the deck height of the piston? (top of pin to top of piston)

thanks

[humanbeing]

125: 57 * 48.8 / Pin: 14mm
150 = EN/GSX/GZ 150 CRANKSHAFT 57 * 56.8 /Pin: 15mm OR 62mm "kit"
172 = GY6 62mm piston * "56.8" CRANKSHAFT
http://www.motorfans.com.cn/bbs/view...uthorid=108220
191 = 65.5 piston * "56.8" CRANKSHAFT
http://www.motorfans.com.cn/bbs/view...A3%C5%D6%D7%D3
Some piston info written by that "fatty" above:
http://www.motorfans.com.cn/bbs/view...=108220&page=4