Trek 700c 100cc
New Member
Hello, My piston likes to scuff the cylinder when operating at high rpm.
The cause of this , I think, is cheap quality piston that expands too much under heat.
I heard a china doll 49mm piston has more thickness thus having less expansion.
I don't know where to get one of these pistons, any suggestion would be helpful.
The cause of this , I think, is cheap quality piston that expands too much under heat.
I heard a china doll 49mm piston has more thickness thus having less expansion.
I don't know where to get one of these pistons, any suggestion would be helpful.