Seller notes

SPI Hyperdryve Piston Kit Standard Bore 85.00Hyperdryve piston made from space-age aluminum alloyRetains tensile strength up to 50% higher than conventional cast pistonHard-anodized crown for increased heat resistance and minimized expansion for lower friction and higher power outputHypereutectic cast aluminum constructionMachined-smooth head is hard anodized to reduces carbon buildupMOS2-coated walls for reduced heat and prevents cold start seizuresPolaris 800 Indy SP 2014-2015Polaris 800 Pro-R...

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