Mahle MS piston set for Chevy small block 440ci is specified with a 4.185in bore and 4.000in stroke, matching heavy-duty build dimensions for big-inch small block applications. The set lists a 6.0in rod length, 0.927" pin and a 9cc dish volume with an approximate 12.4:1 compression ratio in this configuration. It’s offered as a complete piston kit sized for 440ci builds.
Mahle MS Piston Set Chevy SB 440ci 4.185in Bore 4.000in Stroke 6.0 Rod .927 HD Pin 9cc 12.4CR