JE Pistons 371971 FSR Piston Kit 67mm Bore 12.0:1 Compression Honda CBR500R

The JE Pistons 371971 is a high-performance FSR (Forged Side Relief) piston kit designed for Honda CBR 500R motorcycles, featuring a 67.00mm standard bore and 12.0:1 compression ratio. This complete 2-cylinder piston kit is forged in the USA using 2618 aluminum alloy, providing the high tensile strength required for demanding performance applications.

Key Features:

• Machined from 2618-T6 high tensile forged aluminum for maximum strength and durability
• Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width while saving weight with a shorter wrist pin
• Dome and dish features smooth flowing radii that require no deburring or preparation
• Engineered, forged and machined 100% in the USA for precise fitment and quality
• Complete kit includes pistons, pins, pin fitment, locks and rings
• Specifically engineered for extreme applications including professional competition

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to deliver premium pistons designed for each specific engine and riding application to provide the ultimate combination of durability and performance. JE has recorded wins at Daytona with American Hondas CBR600RR, low ETs on the drag strip and land speed records at Bonneville.