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Old 06-24-2014, 08:37 PM
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MotorBicycleRacing MotorBicycleRacing is offline
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Join Date: Jul 2010
Location: SoCal, Orange County.
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Default Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

Originally Posted by sergman89 View Post

Thats the piston set I purchased, to be honest with you guys im not sure what a 40mm stroke means. I tried incorporating that into my search for a new piston, but I couldnt find anything.

I did eye this piston up with the other one and visually I cannot see a difference in size.
The pistons are all the same size as in diameter and height.
Check the wrist pin hole heights.

The eBay add is for a "SkyHawk" high hole piston.

The triangle marked piston is a PK 80 low hole piston.

Last edited by MotorBicycleRacing; 06-24-2014 at 08:49 PM.
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