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Mahle MS piston set for Chevy small‑block 389ci applications offers precise forged pistons sized 4.135 in bore with 3.625 in stroke and 6.125 in rod length. Each piston uses a 0.927 in pin, 9.0 cc dish, and is specified at 445 g with a 13.5:1 compression ratio. Built to OE-influenced standards, these pistons provide a complete matched set for builders assembling a 389ci small‑block Chevy.
Mahle MS Piston Set Chevy SB 389ci 4.135in Bore 3.625/3.75 Stroke 6.125/6 Rod .927 HD Pin 9cc 13.5CR
