JE Pistons BMW S14B23 13.0:1 KIT Set of 4 Pistons

If you're building a high-performance BMW S14B23 engine, these JE Pistons are a solid choice. This is a complete kit of four forged pistons designed specifically for your engine, featuring a 13.0:1 compression ratio. JE Pistons has been making forged pistons for over 75 years, and they build these right here in the USA using 2618 aluminum, which gives them the high tensile strength needed for demanding performance 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 power loss by reducing skirt width. This design also saves weight with a shorter wrist pin. Depending on the specific application, you might also find an accumulator groove, which helps reduce pressure from combustion gases, leading to better ring seal and consistent power. Some applications also include a skirt coating to further reduce friction and wear on the piston skirts and cylinder walls, which also helps quiet down engine noise. These pistons are built to optimize performance and durability for racing applications.

This kit comes complete with high-quality wrist pins, locks, and JE Pro Seal premium piston rings, so you have everything you need to get these pistons installed. Just remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.