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The Mahle MS piston set for BBC 498ci engines supplies eight pistons at a 4.320in bore with a 4.25in stroke and a .990in wrist pin. Paired with 6.385in rods and a 43.0cc crown volume, these pistons produce roughly a 13.1:1 compression ratio per the extended data. This kit is intended for big‑block Chevy rebuilds that require exact piston dimensions and combustion volume control.
Mahle MS Piston Set BBC 498ci 4.320in Bore 4.25in Stroke 6.385in Rod .990 Pin 43cc 13.0 CR Set of 8
