COMP Cams Sportsman Valves are available in a variety of materials, diameters and stem lengths for street and competition engines. The stainless steel valves are made from 21-4N forged steel alloy with 50 HRC minimum hard tips (eliminating lash caps); these valves deliver tremendous performance and durability. The hard chrome-plated 11/32" stems utilize proprietary oil retention surfacing. For extremely high revving LS applications, COMP® engineers developed titanium valves. Weighing 35% less than stainless steel, titanium valves are a must for race applications where valve float is not an option. For high temperature and high boost applications, valves constructed from Inconel superalloy are also available. PartNumber : cca6066-8 Description : Sportsman Series Titanium Exhaust Valves; 8 Pieces Title : 6066-8 Titanium Valves, LS7 EXH 1.615 " X 8MM California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Engine Family : GM Gen IV LS7 Head Diameter : 1.615 Material : Stainless Steel Number of Grooves : Bead Lock Overall Length : 5.595 Valve Position : Exhaust Valve Series : Sportsman Valve Stem Outer Diameter : 8 Head Diameter : 1.615" Lock Groove : Bead Lock Overall Length : 5.595" Size : 8mm Engine Components::Valves