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The COMP Cams Sportsman stainless exhaust valve set for LS1 applications (1.57" head, 4.930" overall) is forged from 21-4N high-strength steel with 50 HRC hardened tips and chrome-plated 11/32" stems with oil-retention surfacing. Sold as a set of eight, the valves feature high-flow underhead fillet relief and swirl-polished fillets to increase flow and reduce radial crack propagation; recommended for hydraulic, mechanical and roller lifter valvetrains.
COMP Cams Ss Valves LS1 Exh 1.57in4.930in
