| Year | 1985 |
| Bore x Stroke | 84 x 72 mm |
| Capacity | 390 cc / 23.7 cu-in |
| Clutch | Wet multi-plate coil spring |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Dry Weight | 157 kg / 346 lbs |
| Engine | Four stroke, single cylinder, SOHC, 4 valve |
| Final Drive | Chain |
| Front Brakes | Single 256mm disc |
| Front Suspension | 35 mm telescopic forks |
| Front Tyre | 90/90 -18 |
| Fuel Capacity | 20 Litres / 5.3 US gal |
| Gear Ratio | 1st 2.384 (31/13) / 2nd 1.555 (28/18) / 3rd 1.200 (24/20) / 4th 1.000 (23/23) / 5th 875 (21/24) |
| Ignition | CDI |
| Induction | Keihin PH 69 |
| Max Power | 34 hp / 25.3 kW @ 7500 rpm |
| Max Torque | 3.4 kgf-m @ 6000rpm |
| Rake | 64° |
| Rear Brakes | 138mm Drum |
| Rear Suspension | Dual shocks with adjustable pre-load |
| Rear Tyre | 110/90 -18 |
| Seat Height | 880 mm / 34.6 in |
| Starting | Electric |
| Trail | 105 mm / 4.1 in |
| Transmission | 5 Speed |
