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Mahle MS piston set for BMW S54 B32 includes six pistons sized for an 87.50mm bore with a 91.0mm stroke and paired with 139mm connecting rods. Each piston uses a 21mm wrist pin, has a -29.0cc skirt volume, weighs about 334g, and targets a 9.1:1 compression ratio; the pistons are TBC coated and supplied as a set of six to match S54 B32 engine rebuild needs.
Mahle MS BMW S54 B32 87.50mm Bore 91.0mm Stroke 139mm Rod 21mm Pin -29.0cc 9.1CR TBC Coat - Set of 6
