JE Pistons 274181 Pro Series High-Performance Forged Engine Piston

The JE Pistons 274181 is a high-performance forged piston engineered for demanding motorcycle applications. Backed by over 50 years of racing heritage, JE Pistons has earned its reputation as a world leader in forged piston technology — with championship victories across NASCAR, the Indy 500, Baja 1000, SCCA Trans-Am, 24 Hours of Daytona, Le Mans, Paris to Dakar, and countless other elite competitions.

The 274181 is part of JE's Pro Series lineup, delivering a purpose-built, dedicated forging with reduced weight for maximum performance. Every detail is precision-engineered to meet the rigorous demands of high-performance and race-ready engines.

Key Features:

• Smooth radius dome and dish designs for optimized combustion chamber flow
• Radiused valve reliefs to reduce stress concentrations and improve durability
• Precision CNC machined ring grooves for consistent ring seal and long service life
• Machined oil drain back holes engineered for specific, controlled oil management
• Factory honed pin bores with matched wrist pins and locks included
• Pro Series reduced weight design with a dedicated forging for improved power-to-weight ratio

JE Pistons' Pro Series forged pistons are the choice of professional racers and serious performance builders worldwide, delivering the strength, precision, and consistency required to win at the highest levels of motorsport.