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The Mahle MS forged piston set for GM LS 427ci configurations is a matched eight‑piston package sized to a 4.065in bore with a 4.125in stroke. Pistons use a 6.125in rod and a 0.927in wrist pin and incorporate an -8.0cc crown producing an approximate 10.8:1 compression ratio. Each piston weighs about 432 g and is produced in 4032 alloy for consistent rebuilds.
Mahle MS Piston Set GM LS 427ci 4.065in Bore 4.125in Stk 6.125in Rod .927 Pin -8cc 10.8 CR Set of 8
