JE Pistons BMW S52B32US 11.5KIT Set of 6 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the BMW S52B32US engine, offering a 3.406-inch bore and an 11.50:1 compression ratio with an inverted dome/dish design. JE Pistons brings over 75 years of experience to the table, engineering, forging, and machining these pistons entirely in the USA to ensure the ultimate combination of durability and performance for your build.

The proprietary Forged Side Relief (FSR) forging design is a key feature, minimizing friction and power loss by using a reduced skirt width. This design, along with a shorter wrist pin, also helps save additional weight. Depending on the specific application, these pistons may include an accumulator groove to reduce pressure from combustion gases, which helps prevent ring flutter and improves ring seal for consistent power delivery. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This kit includes everything you need to get your engine rebuilt: six pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. JE Pistons are proven on the track, from drift to drag, and are a solid choice when you need reliable performance from your engine's core components. Please note that this part is not CARB approved and cannot be shipped to California.