Mahle MS piston set for BBC 460ci high-compression applications is an eight-piston matched kit for big-block Chevy builds. These pistons are specified for a 4.280 in bore, 4.000 in stroke, 6.385 in rod and 0.990 in wrist pin, with a 48.0 cc crown volume yielding about 12.8:1 compression. Extended notes indicate a piston mass near 621 g and alloy reference 2618.
Mahle MS Piston Set BBC 460ci 4.280in Bore 4.00in Stroke 6.385in Rod .990 Pin 48cc 12.8 CR Set of 8