Cylinder Works - Yamaha WR450F '07-'15, YZ450F '06-'09, YFZ450R '09-'18

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A Cylinder Works replacement cylinder is a completely new, not remanufactured, cast aluminium nickel silicon carbide (NSC) electroplated stock bore cylinder that appears just like an OE cylinder. NSC is a composite of nickel and silicon carbide, providing an excellent wear-resistant surface with oil retention capabilities. Cylinders are then diamond honed to the exact bore dimension and proper surface finish to ensure the proper ring seal and oil retention. Features: Cylinder looks just like stock. Nickel silicon carbide plated for longer life. No machine work needed * Replacement cylinder for standard bore only. * Honda CRF250R and CRF250X may require slight case modification. Kit comes with instructions. Show more