JE Pistons 247944 Pro Series Forged Motorcycle Piston Kit

The JE Pistons 247944 is a Pro Series forged piston kit engineered for high-performance motorcycle applications. Built on decades of championship-winning racing heritage, this piston kit delivers the precision engineering and race-proven durability that JE Pistons is known for across motocross, road racing, and off-road competition.

Key Features:

• Pro Series dedicated forging — optimized weight reduction and geometry specific to the application
• Smooth radius dome and dish designs for optimized combustion chamber efficiency
• Radiused valve reliefs to maximize flow and minimize stress concentrations
• Precision CNC-machined ring grooves for accurate ring seal and long service life
• Engineered oil drain-back holes machined for application-specific oil control
• Factory honed pin bores for precise wrist pin fit straight out of the box
• Includes wrist pins and locks — everything needed for a complete piston installation

JE Pistons are engineered, forged, and machined 100% in the USA using premium 2618 aluminum alloy, delivering the high tensile strength required for demanding performance and racing environments. The Pro Series line incorporates input from professional-level racing teams, making this kit a trusted choice for builders who demand factory-quality tolerances and competition-grade performance.