JE Pistons BMW S52B32US 9:1 KIT Set of 6 Pistons

If you're rebuilding the engine in your BMW S52B32US, these JE Pistons are a solid choice for a high-performance build. This set includes six pistons designed specifically for that engine, featuring a 9:1 compression ratio. JE Pistons has been making forged pistons for over 75 years, and they engineer and machine these right here in the USA using 2618 aluminum, which gives them the high tensile strength needed for demanding applications.

What sets these pistons apart is their advanced design. They use a proprietary Forged Side Relief (FSR) forging design that helps minimize friction and reduce weight by using a narrower skirt and a shorter wrist pin. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, which improves ring seal and keeps power consistent. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also cutting down on operating noise. This attention to detail means you get optimized performance and durability.

This kit comes complete with everything you need to get these pistons installed: high-quality wrist pins, locks, and JE's Pro Seal premium piston rings. They are made 100% in the USA, ensuring you're getting a well-built part backed by extensive experience. Please note that these pistons are not CARB approved and cannot be shipped to California.