The Mahle MS piston set for Hemi 392ci with slightly reduced crown volume is an eight-piece matched piston kit intended for Hemi rebuilds that target a lower combustion chamber displacement. It’s sized for a 3.927 in bore with a 4.050 in stroke to produce the listed 392 cid. Pistons are specified as 3.927 x 1.095RCH with a 6.125 in rod and 0.927 in pin, carry -2cc crown volume and a 9.3:1 compression ratio; individual mass is recorded at about 405 g.
Mahle MS Piston Set Hemi 392ci 3.927in Bore 4.05in Stroke 6.125in Rod .927 Pin -2cc 9.3 CR Set of 8