Cylinder Works 10-13 Yamaha YZ 450 F 450cc +2mm Big Bore Cylinder Kit 470cc 99mm

Cylinder Works 21005-K01 Big Bore Cylinder Kit – 99.00 mm – Yamaha Maximize your Yamaha's power with the Cylinder Works 21005-K01 Big Bore Cylinder Kit. This bolt-on kit includes a cylinder, Vertex piston, and top-end gaskets for enhanced performance. What’s Included: Big Bore Cylinder (99.00 mm), Vertex Piston Kit (piston, rings, pin, clips), Top-End Gasket Kit. Key Features: Big bore design increases displacement to 470 cc (+2.00 mm overbore), Nickel-silicon carbide-plated cylinder for durability and long life, Includes matched Vertex pistons for longevity and reduced engine noise, Virtually identical to OEM cylinders, Made in the U.S.A., Compression ratio: 12.5:1, No machine work required. Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.