JE Pistons 130798S Forged Piston Kit Yamaha 90mm Bore 11:1 Compression

The JE Pistons 130798S is a high-performance forged piston kit designed for Yamaha engines, featuring a 90.00mm bore and 11.00:1 compression ratio. As the leader in forged racing pistons with over 75 years of experience, JE Pistons engineers, forges, and machines every piston 100% in the USA, delivering exceptional durability and performance for demanding powersports applications.

Key Features:

• Forged from 2618 aluminum alloy, yielding high tensile strength needed for high-demand performance applications
• Proprietary Forged Side Relief (FSR) design minimizes friction and power loss with reduced skirt width
• Dome/dish features smooth flowing radii requiring no deburring or preparation
• Specifically engineered for extreme applications including professional competition
• Complete kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings

Each piston is designed for its specific engine and riding application to provide the ultimate combination of durability and performance. Whether on the motocross track or trail, JE Pistons delivers proven performance with precision CNC machining and tolerances held to millionths of an inch.