- Replacement for a lost axle nut or upgrade for bikes equipped with a castle-style axle nut
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1989-1999 | Honda | CR125R | |
| 1997 | Honda | CR250 | |
| 1982-1996 | Honda | CR250R | |
| 1998-1999 | Honda | CR250R | |
| 1983 | Honda | CR480R | |
| 1984-2001 | Honda | CR500R | |
| 2000-2007 | Honda | XR650R | |
| 1998-1999 | Husqvarna | CR125 | |
| 1982-1987 | Husqvarna | CR250 | |
| 1999 | Husqvarna | CR250 | |
| 1993-2002 | Kawasaki | KX125 | |
| 1993-2002 | Kawasaki | KX250 | |
| 1986-2007 | Suzuki | RM125 | |
| 1986-2008 | Suzuki | RM250 | |
| 1989-1996 | Suzuki | RMX250 | |
| 1986-1998 | Yamaha | YZ125 | |
| 1982-1998 | Yamaha | YZ250 | |
| 1998 | Yamaha | YZ400F | |
| 1982-1990 | Yamaha | YZ490 | |