manley valve, severe duty, exhaust, 1.71 in. head dia, 0.3415 in. stem dia, 5.167 in. length, each

Manley Race series performance valves are a great choice for your bracket, oval track, or high performance street engine. All valves are made from stainless steel (intakes are NK-842; exhausts are XH-426) with chrome stems and hardened valve tips. In addition to being made from high-quality materials, Race series valves are swirl polished and fully machined.