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The COMP Cams Sportsman stainless exhaust valve for LS1 (1.57" head, 4.930" overall) is made from 21-4N forged high-strength steel with 50 HRC minimum hardened tips and chrome-plated 11/32" stems with oil-retention surfacing. These valves incorporate high-flow underhead fillet relief and swirl-polished fillets to boost flow and reduce radial crack propagation, and are recommended for hydraulic, mechanical and roller lifter valvetrains.
COMP Cams Ss Valve LS1 Exh 1.57in 4.930in
