KIBBLEWHITE Single Spring Kit 40-41120

Single Spring Kit Extensive R&D on all applications to provide high-performance components that last longer than OEM, Black Diamond* valves are one-piece forgings made from 21-4N high-performance stainless steel, Trademarked Black Diamond treatment provides a stem that has a longer life capacity, Tensilite? titanium valves are cut from solid U.S. milled titanium bar stock, Bar is cut, forged and then the valve stem is pulled from the forging and cross-sectioned and reduced, then given a final grinding and machining before being encased in a hard chromium nitride (CRN) shell, Valve guides are made of C630 nickel-aluminum bronze, Super-clean silicon wire used in valve springs is ground, not shaved, and X-rayed at regular intervals to check for flaws, Titanium retainers are made from 6AL4V titanium alloy; designed to be the strongest and lightest for ultimate performance, Keepers not included; use OEM keepers and bases or Kibblewhite keepers and bases, Valves and guides are sold each; spring kits come complete for one motor and include instructions, All components made in the U.S.A.