ACU & National Association Of Supertwins
Champions 2004
| Class | Winner |
| Top Fuel Bike | Steve Woolatt |
| Funny Bike | Neil Midgley |
| Pro Stock Bike | Tony Clark |
| Comp Bike | T J O'Brien |
| Super Street Bike | Graham Dance |
| Supertwin Fuel | Ian Turburville |
| Supertwin Gas | George Laycock |
| Supertwin Modified | Simon Hodgson |
| Supertwin Street | Mark Earrey |