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Mahle MS piston set for BBC 531ci applications is a matched eight-piston kit intended for big-block Chevy engines. These pistons match a 4.600 in bore with a 4.000 in stroke and 6.385 in rod length, using a 0.990 in wrist pin and a -3cc crown volume that yields about 9.2:1 compression. Extended specs reference 4032 alloy construction and an individual piston weight near 565 g.
Mahle MS Piston Set BBC 531ci 4.600in Bore 4.00in Stroke 6.385in Rod 0.990 Pin -3cc 9.2 CR Set of 8
