- Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel
- Lightweight, strong, one piece forging with profiles that provide excellent flow characteristics
- Valve is infused by a special German process to a depth of .002, with a surface build up of .0002 which improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating
- Each valve is designed using Finite Element Analysis (F.E.A) software, and profiles are tested on a computerized flow bench
- Stems are coated with black nitroneg
- Made in the USA
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1989-1990 | Honda | Tourist Trophy 500 GB500 49 State | |
| 1983-1987 | Honda | XL600R | |
| 1993-2003 | Honda | XR100R | |
| 1993-2002 | Honda | XR200R | |
| 1994-1996 | Honda | XR250L | |
| 1993-2004 | Honda | XR250R | |
| 1996-2004 | Honda | XR400R | |
| 1983-1984 | Honda | XR500R Pro Link 500 | |
| 2000-2003 | Honda | XR50R | |
| 1985-2000 | Honda | XR600R | |
| 1993-2009 | Honda | XR650L | |
| 2012-2022 | Honda | XR650L | |
| 2000-2007 | Honda | XR650R | |
| 1997-2003 | Honda | XR70R | |
| 1993-2003 | Honda | XR80R | |