JE Pistons 221798 Pro Series Forged Piston Kit

JE Pistons has been the trusted choice of professional racers and engine builders for over 50 years. The JE Pistons 221798 Pro Series Forged Piston Kit is engineered to deliver exceptional strength, precision, and durability for high-performance motorcycle applications. Purpose-built for serious builds, this kit reflects the same championship-winning technology found in JE pistons across NASCAR, Indy 500, Baja 1000, 24 Hours of Daytona, Le Mans, Paris to Dakar, and SCCA Trans-Am competition.

The Pro Series piston features a dedicated forging optimized for reduced reciprocating weight without sacrificing structural integrity. Smooth radius dome and dish profiles promote efficient combustion chamber flow, while radiused valve reliefs minimize stress concentrations and reduce the risk of cracking under extreme loads.

Key Features:

• Dedicated Pro Series forging with reduced weight for improved throttle response and engine efficiency
• Smooth radius dome and dish designs for optimized combustion dynamics
• Radiused valve reliefs to reduce stress and improve durability
• Precision CNC machined ring grooves for accurate ring seating and consistent sealing
• Machined oil drain back holes engineered for specific oil control and reduced oil consumption
• Factory honed pin bores for precise wrist pin fit and smooth operation
• Wrist pins and locks included for a complete, ready-to-install kit

Built to the exacting tolerances demanded by professional race teams and high-performance engine builders alike, the JE Pistons 221798 delivers track-proven reliability in a street or race-ready package.