| MODEL | SUZUKI DR 400S 1980 |
| Year | 1980 |
| Engine Type | Four stroke, single cylinder, SOHC, 2 valves |
| Displacement / Capacity | 396 cc / 24.2 cu in |
| Bore X Stroke | 88 x 65.2 mm |
| Compression Ratio | 9.3:1 |
| Cooling System | Air cooled |
| Max Power | 19.7 kW / 27 hp @ 7500 rpm |
| Max Torque | — |
| Ignition | CDI |
| Induction | 33 mm Mikuni carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 5 speed |
| Clutch | Six-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single down-tube, mild steel, steel swingarm |
| Front Suspension | Telescopic coil forks, 231 mm / 9.1 in wheel travel |
| Rear Suspension | Kayaba dual gas shocks, 211 mm / 8.3 in wheel travel |
| Front Brakes | Drum, 150 mm |
| Rear Brakes | Drum, 150 mm |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 141 kg / 311 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00-21 |
| Rear Tyre | 4.60-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 9 Litres / 2.4 US gal / 2.0 Imp gal |
| Fuel Consumption | 4.2 L/100 km / 55 US mpg / 66 Imp mpg |
| Top Speed | 141 km/h / 88 mph |
The DR 400S succeeded the DR 370 with a bore-enlarged 396 cc engine, electronic ignition in place of points, and a new steel frame and swingarm with more suspension travel. Road testers found the torque better and the power adequate, and praised the steering and stability in sand and mountain trail riding, though they called the bike heavy and puncture-prone on rocky ground.
