| Year | 2004 |
| Bore x Stroke | 64 x 62 mm |
| Capacity | 399 cc / 24.2 cu-in |
| Clutch | Wet multi-plate |
| Compression Ratio | 10.3:1 |
| Cooling System | Liquid cooled |
| Dimensions | Height 1085 mm / 42.7 in Length 2450 mm /96.5 in Width 925 mm / 36.4 in |
| Dry Weight | 225 kg / 496 lbs |
| Engine | Four stroke, 52°V-twin, SOHC, 3 valves per cylinder. |
| Final Drive | Shaft |
| Front Brakes | Single disc 2 piston caliper |
| Front Suspension | Air assisted telescopic forks. |
| Front Tyre | 120/90-17 64S |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Ignition | Electronic |
| Induction | VDD1B |
| Max Power | 33 hp / 24.1 kW @ 7500 rpm |
| Max Torque | 35 Nm / 3.6 kgf-m @ 5500 rpm |
| Model | Shadow Aero 400motorcycles |
| Rear Brakes | Drum |
| Rear Suspension | Pivoted fork dual adjustable shocks |
| Rear Tyre | 170/80-15 M/C 77S |
| Seat Height | 130 mm / 5.1 in |
| Starting | Electric |
| Transmission | 5 Speed |
| Wheelbase | 16620 mm / 63.8 in |
