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Mahle MS forged piston set for SBC 420ci applications, 4.155 in bore with 3.875 in stroke and 6.000 in rod; set of eight. Specified with a 0.927 in pin and 4.0 cc dish to target roughly 13.4:1 compression, these 2618-series pistons balance high-strength forging and controlled mass for demanding small-block Chevy builds that require precise weight and geometry for reliable high-output operation.
Mahle MS Piston Set SBC 420ci 4.155in Bore 3.875in Stroke 6.0in Rod .927 Pin 4cc 13.4 CR Set of 8
