Cylinder Works Big Bore Comp Kit 478cc +3mm 12.5:1 For Yamaha

• California Prop 65 Warning: Cancer and Reproductive Harm - https://www.p65warnings.ca.gov/
• UPC: 714205040142

The Cylinder Works +3mm Big Bore Competition Kit increases displacement to 478cc, providing enhanced performance. It includes a nickel silicon carbide-plated cylinder for durability and reduced engine wear. The kit is designed to be a direct replacement, requiring no additional machining for installation. Each kit comes complete with a cylinder, Vertex piston, rings, pin, clips, and gaskets. The components are precision-matched to ensure longevity, improved performance, and reduced engine noise. The cylinder closely resembles the OEM design and is honed to exact specifications for easy piston installation. This kit offers a straightforward upgrade-simply purchase and install for increased power and reliability. Replacement pistons, gaskets, and ring sets are also available separately.