Up for sale is KPMI 1984-1986 FXWG Wide Glide Harley Davidson BLACK DIAMOND INTAKE VALVE HD TWIN CAM 88-103" 05-11. The vendor part number is 20-20322. Please read the title to know what is for sale All KPMI Black Diamond� stainless steel valves are impregnated by a special German process to a depth of .002�, with a surface build up of .0002�. This �Black Diamond�� process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Black Diamond� Valves are light, strong, one-piece forgings with profiles that provide excellent flow characteristics.