- Laboratory flow analysis proves Boyesen dual-stage reeds outperform standard reeds
- They permit greater flow velocity over the entire range of operating pressures
- Increased performance from start-up to top acceleration
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1989-1991 | KTM | 250 DXC | |
| 1990-1998 | KTM | 250 EGS | |
| 1990-1998 | KTM | 250 EXC | |
| 1989 | KTM | 250 EXS | |
| 1983-1991 | KTM | 250 MX | |
| 1984-1988 | KTM | 250 MXC | |
| 1996-1998 | KTM | 250 MXC | |
| 1992-1998 | KTM | 250 SX | |
| 1992 | KTM | 250 TXC | |
| 1990-1992 | KTM | 300 DXC | |
| 1990-1998 | KTM | 300 EGS | |
| 1990-1998 | KTM | 300 EXC | |
| 1990-1991 | KTM | 300 MX | |
| 1990-1998 | KTM | 300 MXC | |
| 1992-1996 | KTM | 300 SX | |
| 1990-1992 | KTM | 300 TXC | |
| 1998 | KTM | 380 EGS | |
| 1998 | KTM | 380 EXC | |
| 1998 | KTM | 380 MXC | |
| 1998 | KTM | 380 SX | |