JE Pistons 300275 Forged Piston Kit 100mm Bore 10.5:1 Compression

The JE Pistons 300275 is a complete forged piston kit designed for Honda XR650L motorcycles, featuring a standard 100mm bore diameter and 10.5:1 compression ratio. This high-performance piston kit delivers exceptional durability and reliability for both OEM replacement and performance applications.

Key Features:

• Machined from 2618 T6 high-tensile forged aluminum for maximum strength and heat resistance
• Standard 100mm bore diameter maintains stock cylinder specifications
• 10.5:1 compression ratio optimized for pump gas performance
• Flat-top piston head design with smooth flowing radii requiring no deburring or preparation
• Compression height: 1.207 inches
• Piston pin: 0.945 inch outside diameter x 2.850 inch length, 5115 steel construction
• Average piston weight: 398 grams for reduced reciprocating mass
• Complete ring set included with 0.048 inch top compression ring, 0.060 inch second compression ring, and 0.0795 inch oil ring

• JE forged piston
• Complete piston ring pack (top compression ring, second compression ring, and oil ring assembly)
• Wrist pin

JE Pistons has over 70 years of racing experience and is the industry leader in high-performance powersports forged racing pistons. Each piston is engineered, forged, and CNC-machined in the USA to exacting tolerances for professional-grade performance and reliability.