JE Pistons BMW S50B30 FSR KIT - Single Piston

This kit includes a single JE Pistons FSR (Forged Side Relief) piston, designed specifically for the BMW S50B30 Euro engine. Forged from 2618 aluminum in the USA, these pistons are built to handle the demands of performance applications. The FSR design features reduced skirt width and a shorter wrist pin, which helps minimize friction and power loss while also saving weight.

JE Pistons uses a proprietary forging process to create pistons that are optimized for specific engines and uses, aiming for a balance of durability and performance. Depending on the application, these pistons may also feature a skirt coating to further reduce friction and wear on the cylinder walls, contributing to quieter operation. An accumulator groove can also be included to help manage combustion gas pressure, which aids in reducing ring flutter and improving ring seal for more consistent power delivery.

This particular kit comes with high-quality wrist pins, locks, and JE Pro Seal premium piston rings. Please note that this part is not CARB approved and cannot be shipped to California. It is also subject to California's Proposition 65 warning.