The Supertech piston set for BMW N55/S55 6-cylinder engines includes six pistons sized to an 84mm bore with a 32.4mm crown height and a 10.2:1 compression ratio; rings are not included. Supplied as a set of six, the kit is intended for engine rebuilds or replacements where precise bore and crown dimensions are required for the N55/S55 turbocharged platforms.
Supertech BMW N55/S55 84mm 32.4mm CH 10.2:1 CR Piston - Set of 6 (Excl Rings)