JE Pistons 317212 Forged Piston Kit Harley Twin Cam Bore - for 107 3.937

The JE Pistons 317212 is a complete forged piston kit designed for Harley-Davidson Twin Cam 107 cubic inch engines with a 3.937 inch (100mm) bore and 10.75:1 compression ratio. With over 75 years of experience, JE Pistons leads the industry in V-Twin and Harley-Davidson piston performance, engineering, forging, and machining all pistons 100% in the USA.

Key Features:

• Machined from 2618-T6 high tensile forged aluminum for exceptional strength
• Dome features smooth flowing radii that require no deburring or preparation
• Dome-style piston head with 5cc volume
• Average piston weight of 355 grams
• Includes JG1001-3937 ring set with 0.044" top compression ring, 0.048" second compression ring, and 0.111" oil ring
• Complete kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
• Specifically designed for each engine application to provide optimized performance and durability

JE designs are specifically engineered for extreme applications including professional competition. This 2-cylinder piston kit provides the ultimate combination of reliability and performance for 1745cc displacement Twin Cam builds.