- All valves are fortified by a special process to a depth of .002" with a surface buildup of .0002"
- This process improves wear properties, reduces friction and provides resistance to corrosion and wear
- Compatible with leaded and unleaded fuels
- Made in the USA
- Kit includes 2 Black Diamond Intake valves and 2 Black Diamond Exhaust valves
- 1.935" Intake / 1.570" Exhaust.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1978-1985 | Harley-Davidson | Roadster XLS | |
| 1977-1978 | Harley-Davidson | Sportster 1000 Cafe Racer XLCR | |
| 1977-1978 | Harley-Davidson | Sportster 1000 Touring XLT | |
| 1972-1979 | Harley-Davidson | Sportster 1000 XLCH | |
| 1972-1985 | Harley-Davidson | Sportster 1000 XLH | |
| 1970-1971 | Harley-Davidson | Sportster 883 XLCH | |
| 1970-1971 | Harley-Davidson | Sportster XLH | |
| 1984-1985 | Harley-Davidson | XLX 61 | |
| 1983-1985 | Harley-Davidson | XR1000 | |
| 1970 | Harley-Davidson | XR750 | |
| 1974-1975 | Harley-Davidson | XR750 | |