JE Pistons BMW S52B32US 12.5KIT Set of 6 Pistons

This kit gives you a complete set of six forged pistons, designed specifically for the BMW S52B32US engine. You'll also get high-quality wrist pins, locks, and JE's Pro Seal premium piston rings, all made in the USA. These pistons are built with a 12.5:1 compression ratio and a 3.406-inch bore, featuring an inverted dome/dish design to optimize performance for demanding applications.

JE Pistons uses a proprietary Forged Side Relief (FSR) forging design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving weight. The pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines pushed to their limits. Depending on the specific application, these pistons may also include an accumulator groove to manage combustion gas pressure, improving ring seal and preventing flutter, and a skirt coating to further reduce friction and wear while also quieting operation. Every component is manufactured 100% in the USA, reflecting JE Pistons' extensive experience in racing piston technology.

This set is engineered for performance builds where durability and power are paramount. Please note that this kit is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.