JE Pistons 3.508 Harley-Davidson FT SPRSTR Piston KitAs the leader in forged racing pistons, JE Pistons has been at the forefront of V Twin and Harley Davidson piston performance for decades, with over 75 years of experience. JE's carefully developed line of V Twin pistons is engineered, forged and machined 100 percent in the USA and are designed for each specific engine and use application to provide the ultimate combination of durability and performance. From fun and powerful cruisers to all out V