As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import and sport compact applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons? performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons. JE, BMW, S52B32 USA, 3.425 in. Bore, 11.50:1, Inverted Dome/Dish, 6 Cyl. Piston Kit BMW M3 Base United States S52B32 USA