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Pair of Wossner 66mm big bore forged pistons
this piston kit will transform your YFZ450 into a high-output beast
make your clutch low maintenance
& 440cc Kits with high compression
YFZ450R YFZ 450X Big Bore Kit 480cc +3 Cylinder 98mm Piston Top End Rebuild Kit RZR Pro R Pair of Wossner 66mm bigBPRATV YFZ450R YFZ 450X Big Bore Kit 480cc Fits Yamaha YFZ450R & YFZ450X Fuel Injected Models ONLY Years 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 BPRATV 98mm big bore nikasil cylinder (1 year warranty)* Wiseco, CP Carrillo, or JE forged big bore piston kit Nitrite coated piston rings Chrome wrist pin Circlips Cometic Top End Gasket Kit Cometic big bore MLS head gasket BPRATV Talon Timing Chain Maxlock TITANIUM
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