Single Mahle piston for BMW S52B applications, specified as a forged single piston with 86.60mm bore, 89.6mm stroke, 135mm rod length and a 22mm wrist pin. Specified volume is -11.0cc with an approximate mass of 324g and a compression ratio listed near 11.2:1; the piston is identified by alloy designation 4032 and supplied as an individual replacement piston for engine builders and rebuilds.
Mahle MS Piston BMW S52B 86.60mm Bore 89.6mm Stroke 135mm Rod 22mm Pin -11cc 11.3 CR - Single