| Year | 1980 |
| Bore x Stroke | 85 x 75 mm |
| Capacity | 425 cc / 25.9 cu-in |
| Clutch | Wet, multi-plate |
| Compression Ratio | 7.3;1 |
| Cooling System | Air cooled |
| Dry Weight | 111 kg / 244.7 in |
| Engine | Two stroke, single cylinder, read valve |
| Final Drive | Chain |
| Front Brakes | Drum |
| Front Suspension | 43mm Telescopic adjustable forks, 300mm wheel travel |
| Front Tyre | 3.00 -21 |
| Front Wheel Travel | 250 mm / 9.8 in |
| Fuel Capacity | 13.6 Litres / 3.5 US gal |
| Ground Clearance | 285 mm / 11.2 in |
| Ignition | CDI |
| Induction | 38mm VM38SS Mikuni carburetor |
| Max Power | 36.9 hp / 27.5 kW @ 6000 rpm (rear tyre |
| Max Torque | 31 lb-ft / 4.23 kg-m @ 5500 rpm |
| Rake | 29.5° |
| Rear Brakes | Drum |
| Rear Suspension | Mono shock, adjustable spring preload and rebound damping, 300mm wheel travel |
| Rear Tyre | 150/80 -18 |
| Rear Wheel Travel | 250 mm / 9.8 in |
| Starting | Kick |
| Trail | 125 mm / 4.9 in |
| Transmission | 5 Speed |
| Wheelbase | 1430 mm / 56.2 in |
