• Replacement piston for the Athena Big Bore Kit

ATHENA BIG BORE PISTON - 478CC

Price Range: $171.99 - $179.99
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What compration ratio is this piston?
Asked by Valik
Well, depending on the year of your YZ450F, the compression ratio of these Athena big bore kits will either be 12.4:1 or 12.5:1.....
Answered by Darren77

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