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Your best source for piston kits and big bore kits at discount prices.
Ben in WV
fits well, great price
nice coating, and quality clips and pin
cody in MO
Put this on my bike along with the Dr. D radiator lowering kit and the two together made my bike handling a lot better than it ever did before. Recommend both kits for anyone with a 10-13 yz450
allison in OK
No issues, it lasted for over 40hrs of racing and practice--- time to buy a new one
DAVID in CA
Can't go wrong with wiseco
Will always use wiseco.