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The Mahle MS forged piston set for GM LS 429ci work is a matched eight‑piston kit sized to a 4.130in bore and 4.000in stroke. Each piston pairs with a 6.125in rod and 0.927in wrist pin and features a -3.0cc crown that corresponds to an approximate 12.2:1 compression ratio. Pistons weigh about 440 g and are produced in 4032 alloy to maintain consistent combustion chambers.
Mahle MS Piston Set GM LS 429ci 4.130in Bore 4in Stk 6.125in Rod .927 Pin -3cc 12.2 CR Set of 8
