| Year | 1991 |
| Bore x Stroke | 55 x 42 mm |
| Capacity | 399 cc / 15.7 cu-in |
| Clutch | Wet, cable operated |
| Compression Ratio | 11.3:1 |
| Consumption average | 42 mpg |
| Cooling System | Liquid cooled |
| Dimensions | Height 1075 mm / 42.3 in Length 1985 mm / 78.1 in |
| Dry Weight | 165 kg / 363.8 lbs |
| Engine | Four stroke 90°V-four cylinder, DOHC, 4 valves per cylinder |
| Engine Oil | SAE 10W-40 |
| Final Drive | Chain |
| Fork Oil Per Rod | 390 ml / SAE 7,5W |
| Frame | Twin-spar aluminum |
| Front Brakes | 2x 269mm 4 piston calipers |
| Front Suspension | 41mm inverted forks: preload and rebound damping |
| Front Tyre | 100/90 R16 |
| Fuel Capacity | 18 Litres / 4.0 gal |
| Ignition | Digitalized full transistor ignition |
| Induction | 4x 34mm Keihin carburetors |
| Lubrication | Wet sump |
| Max Power | 59.hp / 43.1 kW @ 12800 rpm |
| Max Torque | 39 Nm / 4.0 kgf-m / 28.8 lb-ft @ 10000 rpm |
| Oil Capacity | 2.4 Litres |
| Rake | 24° |
| Rear Brakes | Single disc 2 piston caliper |
| Rear Suspension | Rising-rate monoshock: pre-load and rebound damping |
| Rear Tyre | 140/60 R18 |
| Rev Redline | 13000 rpm |
| Seat Height | 870 mm / 30.7 in |
| Spark Plug | NGK ER9EH |
| Standing ¼ Mile | 12.6 sec / 175 km/h / 109 mph |
| Starting | Electric |
| Top Speed | 219 km/h / 136 mph |
| Trail | 96 mm / 3.7 in |
| Transmission | 6 Speed |
| Valve Clearance | Intake - 0.15 mm / Exhaust 0.24 |
| Wheelbase | 1345 mm / 53.0 in |
