Seller notes

For use on the 2009 thru 2017 Yamaha YFZ450R and YFZ450X. 3mm oversize, 12.5:1 compression ratio, overall displacement 478cc. Cycle Works Cylinder Kits come with Vertex Piston, Ring(s), wrist pin clips.Top end gasket kit is also included. No more having to send your cylinders for re-plating after the cylinder becomes worn or damaged.Cylinders look virtually identical to the OEM.Cylinders are Nickel Silicon Carbide plated for long life and honed to exact size for easy installation....

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