JE Pistons BMW S14B23 8.5:1 KIT Set of 4 Pistons

Forged in the USA from 2618 aluminum, these JE Pistons are built for the demanding performance needs of the BMW S14B23 engine. The 2618 aluminum alloy offers high tensile strength, crucial for engines pushed to their limits. This kit is designed specifically for the S14B23, ensuring optimized performance and durability for racing applications.

JE Pistons utilizes a proprietary Forged Side Relief (FSR) forging design. This design minimizes friction and power loss by reducing skirt width and uses a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons may also feature an accumulator groove to help reduce combustion gas pressure, leading to better ring seal and consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer life.

This complete kit includes four pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. They are designed with an inverted dome/dish shape and a 3.701-inch bore, achieving a compression ratio of 8.5:1. Please note that this part is not CARB approved and cannot be shipped to California.