Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Mahle MS forged piston set for GM LS 427ci variants is a matched eight‑piston kit sized for a 4.125in bore and 4.000in stroke with a 6.067in rod. Pistons use a 0.927in wrist pin and feature a -2.5cc crown that supports an estimated 12.2:1 compression ratio. Each piston weighs about 447 g and is produced in 4032 alloy for consistent engine rebuilds.
Mahle MS Piston Set GM LS 427ci 4.125in Bore 4in Stk 6.067in Rod .927 Pin -2.5cc 12.2 CR Set of 8
