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Mahle MS piston set for GM LS 366 ci is an eight‑piston kit for LS engine assemblies, sized to a 4.010 in bore with a 3.622 in stroke. The pistons work with 6.125 in rods and 0.927 in wrist pins and are specified with a high compression figure (11.9–12.3 range in source notes). Extended specs list a 470 g mass and 2618 alloy, providing forged strength for performance‑oriented LS builds.
Mahle MS Piston Set GM LS 366ci 4.010in Bore 3.622in Stk 6.125in Rod .927 Pin 12cc 11.9 CR Set of 8
