Black Diamond Intake Nitrided Valve
- All KPMI Black Diamond trade stainless steel valves are impregnated by a special German process to a depth of .002 rdquo with a surface build up of .0002 rdquo
- This ldquo Black Diamond trade rdquo process improves wear properties reduces friction and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating
- Black Diamond trade Valves are light strong one-piece forgings with profiles that provide excellent flow characteristics
| 1945 | Harley-Davidson | F |
| 1946 | Harley-Davidson | F |
| 1945 | Harley-Davidson | FL |
| 1946 | Harley-Davidson | FL |
| 1947 | Harley-Davidson | FL |
| 1948 | Harley-Davidson | FL |
| 1958 | Harley-Davidson | Duo Glide |
| 1959 | Harley-Davidson | Duo Glide |
| 1960 | Harley-Davidson | Duo Glide |
| 1961 | Harley-Davidson | Duo Glide |
| 1962 | Harley-Davidson | Duo Glide |
| 1949 | Harley-Davidson | Hydra Glide |
| 1950 | Harley-Davidson | Hydra Glide |
| 1951 | Harley-Davidson | Hydra Glide |
| 1952 | Harley-Davidson | Hydra Glide |
| 1953 | Harley-Davidson | Hydra Glide |
| 1954 | Harley-Davidson | Hydra Glide |
| 1955 | Harley-Davidson | Hydra Glide |
| 1956 | Harley-Davidson | Hydra Glide |
| 1957 | Harley-Davidson | Hydra Glide |
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