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Mahle MS piston set for BBC 555ci applications is a matched eight-piston kit intended for big-block Chevy builds and engine rebuilds. The pistons are specified for a 4.560 in bore with 4.250 in stroke compatibility, 6.385 in connecting rod length and 0.990 in wrist pin, and a -3cc crown yielding about 9.6:1 compression. Extended data lists 4032 alloy construction and an individual piston mass near 544 g.
Mahle MS Piston Set BBC 555ci 4.560in Bore 4.25in Stroke 6.385in Rod 0.990 Pin -3cc 9.6 CR Set of 8
