JE Pistons 128995 Honda XR600R 100mm 10.5:1 Forged Piston Kit +3mm Overbore

The JE Pistons 128995 is a high-performance forged piston kit designed for the Honda XR600R. This +3mm overbore kit delivers a 100.0mm bore diameter with a 10.5:1 compression ratio, displacing approximately 629cc — making it an ideal upgrade for riders seeking increased performance from their XR600R engine.

Key Features:

• 2618 T6 high-tensile strength forged aluminum construction for superior durability under extreme conditions
• 100.0mm bore diameter — +3mm overbore for increased displacement and power
• 10.5:1 compression ratio for optimized performance
• Dome/dish features smooth flowing radii — no deburring or preparation required
• Engineered specifically for extreme applications, including professional competition use
• Single-cylinder kit (1 Cyl.) designed precisely for the Honda XR600R engine
• Kit includes wrist pins, pin locks, and JE Pro Seal premium piston rings

Built entirely in the USA, JE Pistons brings over 75 years of forged racing piston expertise to this off-road piston kit. Whether you're rebuilding a worn engine to a larger bore or chasing more performance on the trail, the 128995 kit delivers the precision fitment and long-term reliability JE Pistons is known for.