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JE Pistons forged piston kit for BMW S50B30 applications includes six pistons sized for an 86.25mm bore with an 11.5:1 compression ratio. JE brings race‑proven forged designs and manufactures pistons in the USA from 2618 aluminum. This kit is engineered for the specific engine, and includes high‑quality wrist pins, locks and JE Pro Seal piston rings while employing features that reduce friction and improve ring sealing.
JE Pistons BMW S50B30US 86.25mm Bore 11.5:1 KIT Pistons Set of 6
