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Fits 2009 & 2010 Yamaha YFZ450R (Fuel Injected Models)
trued & welded crankshaft engineered for maximum durability and power
Get ready to improve lap times and feel the difference high quality valves and springs make
They have the side of the piston forged and their pin bosses moved inward toward the center
90430-08119-00
03 04 WR450F WR 450F 98mm CP Big Bore Piston 13.5:1 478cc Cometic Top Gaskets Big Bore Fits 2009 & 2010 YamahaHigh Performance 98mm CP Big Bore Piston Kit for Yamaha WR450F (2003 2004) Boost Power to 478cc! Unleash the full potential of your Yamaha WR450F with our premium 98mm CP Big Bore Piston Kit! Specifically designed for 2003 and 2004 models, this kit transforms your bike's performance by increasing displacement to an impressive 478cc and elevating your compression ratio to 13. 5: 1. Whether you're hitting the track or tackling tough trails, this upgrade
US$ 17.99
US$ 17.99
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US$ 30.99