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Mahle MS piston set for GM LSX 421 cid (4.030x1.050) is a matched eight-piston kit for V8 rebuilds. Documented specs include a 4.030" bore, 4.125" stroke, 6.125" rod, 0.927" pin diameter, -5.8cc piston volume and a listed compression ratio near 11.2–11.9:1 with per-piston mass around 414g. Supplied as a complete set of eight.
Mahle MS Piston Set GM LSX 421cid 4.030x1.050RCH 4.125 Stk 6.125 Rod .927 Pin -5.8cc 11.2CR Set of 8
