Increase engine compression ratio to 13.0:1 from 11.9:1. Piston is forged aluminum with machined valve pockets for additional valve clearance when used with higher lift camshafts. Offers 1.5 to 3 HP increase throughout most of the powerband. Weight is same as stock so no crank rebalancing is necessary. Includes piston rings, piston pin, and clips (uses stock replacements). GYTR™ Top End Gasket Kit (GYT-5TG04-10-00) required for installation.
*This accessory may be restricted to closed-course use. This performance accessory does not meet California standards for off-road recreational vehicle usage.