SpeedyManiac said:I wouldn't drill holes in it. Wiseco didn't put holes in the piston for a reason.
Joshtee said:just to get this right. I just put a new piston in my 2000 kx125/144 and the instructions did not say to drill any holes in it. Would that mean that that particular piston should not be drilled?
depends - is there an exhaust bridge on that bike?
89yz250 said:What are the signs and symptoms of a weak top end?
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