JE Pistons forged piston set for BMW S65B40 engines, 10.5:1 compression ratio, set of eight. Forged in the USA from 2618 aluminum, these pistons use JE’s proprietary FSR forging geometry, can include accumulator grooves and skirt coatings where applicable, and are supplied with high-quality wrist pins, locks and JE Pro Seal rings to support high-demand performance applications.
JE Pistons BMW S65B40 10.5:1 Set of 8 Pistons