JE Pistons BMW S50B30 11:5 KIT Set of 6 Pistons

These JE Pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines operating under demanding performance conditions. This specific kit is designed for the BMW S50B30 Euro engine, featuring a 3.396-inch bore and an 11.50:1 compression ratio, intended to optimize power and durability for racing applications.

JE Pistons applies over 75 years of experience to their forged pistons, with this set being engineered, forged, and machined entirely in the USA. They incorporate a proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by reducing skirt width and utilizing a shorter wrist pin for weight savings. Depending on the specific application, these pistons may also include an accumulator groove to manage combustion gas pressure, reduce ring flutter, and improve 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 needed to outfit your S50B30 engine: six pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. While these pistons are built for ultimate performance and durability on the track, please note they are not CARB approved and cannot be shipped to California.