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The Mahle MS piston set for BMW S54 B32 is a six‑cylinder forged replacement set sized for an 87.50mm bore with 91.0mm stroke and 139mm rod. The set lists a 21mm pin, -9.2cc volume, 12.5:1 compression ratio and approximately 357g piston weight, TBC coated. It’s supplied as a set of six for precise engine rebuild or performance applications—confirm exact fitment before ordering.
Mahle MS Piston Set BMW S54 B32 87.50mm Bore 91.0mm Stroke 139mm Rod 21mm Pin -9.2cc 12.5CR Set of 6
