13:1 piston for yfz 450
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13:1 piston for yfz 450
Sparks exhaust on order. Still not sure about the piston. I might ride it with the stock piston this fall and during the winter put a bigbore piston in it from sparks. I am going to change the exhaust cam timing. I found out the wr and yz take the same cam they are just timed different.
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