| TECHNICAL SPECIFICATION | 
|---|
| Model ID | 
|---|
| Manufacturer (Make) | Husqvarna | 
| Model Name | 400 WR | 
| Year | 1986 | 
| Category(class) | Motocross / Dirtbike | 
| Engine | 
|---|
| Engine Capacity (Displacement) | 395 ccm (24.1 cubic inches) | 
| Engine Type | 1 cylinder | 
| Bore x Stroke | Ø82.5 mm x 74.0 mm (Ø3.25 inches x 2.91 inches) | 
| Bore/Stroke Ratio | 1.11 | 
| Stroke | 2 | 
| Timing System | MEMBRANE | 
| Cooling System | Liquid | 
| Powertrain | 
|---|
| Gearbox | 6 speed | 
| Chassis/Suspension/Brakes | 
|---|
| Front Brakes | Single disc | 
| Rear Brakes | Drum | 
| Front Tire | 3.00-21 | 
| Rear Tire | 5.00-18 | 
| Dimensions | 
|---|
| Curb Weight | 110 kg (243 lb) | 
| Fuel Capacity  | 10.5 litres (2.77 gallons) | 
| Performance | 
|---|
| Max Power | 17.00 HP (12.4 kW) at 5500 RPM | 
| Power/Weight Ratio | 0.15 Hp/Kg | 
| Top Speed | 110 km/h (68mph) | 
| Acceleration (dart, speedup) time |  | 
| 0-100 km/h | 10.1 seconds | 
| 0-60 mph | 9.6 seconds | 
| 1/4 mile | - | 
| 60 to 140 km/h, highest gear | - |