Seller notes

You are bidding on a Brand new CYLINDER WORKS 478CC BIG BORE Cylinder kit for A YAMAHA YZ450F, years 03-05 WR450F 03-06!! Will give increased horsepower and torque. This kit is a TRUE BOLT ON, comes complete with A new Cylinder! Simply bolt it up! Keep all your orginal parts! Comes with the following: Aluminum cylinder with a nickel Silicon carbide coating Forged piston kit RINGS CLIPS WRIST PIN Top End Gasket kit Complete instructions Cylinder looks like a stock cylinder Everything you need to ...

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