03 04 WR450F WR 450F 98mm CP Big Bore Piston 13.5:1 478cc Cometic Top Gaskets Big Bore Tired of getting left behind

Tired of getting left behind on the trails

Get ready to improve lap times and feel the difference high quality valves and springs make

– Heat treated

BPRATV YZ250 Stock Bore Cylinder Head with Titanium Acorn Cap Nuts

and you can do anything from stock ported cylinders to a +10mm DM

03 04 WR450F WR 450F 98mm CP Big Bore Piston 13.5:1 478cc Cometic Top Gaskets Big Bore Tired of getting left behindHigh 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