BLACK DIAMOND EXHAUST VALVE YOUTH The lock nut can be

The lock nut can be locked and unlocked with a 5mm hex wrench

heat treated and surface burnished

Progressive Cornering Block Technology (PCBT) on the shoulder knobs increase surface area of the interior block

a wheel that makes you say “Thats Clean”

BLACK DIAMOND EXHAUST VALVE YOUTH The lock nut can beThese materials have proven heat and corrosion resistance properties. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Strict attention is paid to the surface preparation of the valves, and the purity of the chrome is closely monitored. A 360 degree anode is used to produce the highest possible grade of hard chrome finish. White Diamond Valves are light, strong, one piece forgings