| Year | 1984 |
| Battery | 12V, 12Ah |
| Bore x Stroke | 53 x 45.2 mm |
| Capacity | 398 cc / 24.3 cu in |
| Clutch | Wet, multiplate |
| Compression Ratio | 10.9:1 |
| Cooling System | Liquid cooled |
| Dimensions | Length: 2110 mm / 83.1 inWidth: 745 mm / 29.3 in Height: 1180 mm / 46.5 in |
| Dry Weight | 177 kg / 390 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. |
| Final Drive | Chain |
| Final Reduction | 3.066 |
| Front Wheel Travel | 150 mm / 5.9 in |
| Front Brakes | 2 x Discs |
| Front Suspension | Telescopic fork, oil dampened |
| Front Tyre | 100/90-16 54S |
| Fuel Reserve | 3.0 Litres / 3.2 US qt / 2.6 Imp qt |
| Fuel Capacity | 17 Litres / 4.5 US gal / 3.7 Imp gal |
| Gear Ratios | 1st 3.166 (38/12) / 2nd 2.125 (34/16) / 3rd 1.631 (31/19) / 4th 1.333 (28/21) / 5th 1.173 (27/23) / 6th 1.083 (26/24) |
| Ground Clearance | 160 mm / 6.3 in |
| Ignition | Fully transistorised |
| Induction | 2 x Mikuni BS26SS carburetors |
| Lubrication System | Wet sump |
| Max Power | 36.9 kW / 49.5 hp @ 10500 rpm |
| Max Torque | 35.3 Nm / 3.6 kgf-m / 26.0 lb-ft @ 8500 rpm |
| Oil Capacity | 2.0 Litres / 2.1 US qt / 1.8 Imp qt |
| Primary Reduction | 2.212 |
| Rake | 27.2° |
| Rear Wheel Travel | 107 mm / 4.2 in |
| Rear Brakes | Single disc |
| Rear Suspension | Swingarm, mono shock |
| Rear Tyre | 110/90-18 61S |
| Seat Height | 780 mm / 30.7 in |
| Starting | Electric |
| Trail | 96 mm / 3.8 in |
| Transmission | 6 Speed |
| Wet Weight | 197 kg / 434 lbs |
| Wheelbase | 1435 mm / 56.5 in |
