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The Mahle MS forged piston set for GM LS 428ci rebuilds is supplied as a matched set of eight pistons sized to a 4.130in bore with a 4.000in stroke and 6.067in rod length. Each piston accepts a 0.927in wrist pin and carries a -3.0cc crown for an estimated 12.2:1 compression ratio. Pistons average about 450 g and are made from 4032 alloy for balanced combustion chambers.
Mahle MS Piston Set GM LS 428ci 4.130in Bore 4in Stk 6.067in Rod .927 Pin -3cc 12.2 CR Set of 8
