| General information |
|---|
| Model: | Yamaha XS 400 |
| Year: | 1979 |
| Category: | Classic |
| Engine and transmission |
|---|
| Displacement: | 392.00 ccm (23.92 cubic inches) |
| Engine type: | Twin |
| Stroke: | 4 |
| Power: | 27.00 HP (19.7 kW)) @ 7000 RPM |
| Compression: | 9.2:1 |
| Bore x Stroke: | 69.0 x 52.4 mm (2.7 x 2.1 inches) |
| Valves per cylinder: | 2 |
| Fuel control: | OHC |
| Cooling system: | Air |
| Gearbox: | 6-speed |
Transmission type
final drive: | Chain |
| Physical measurements |
|---|
| Weight incl. oil, gas, etc: | 182.0 kg (401.2 pounds) |
| Chassis and dimensions |
|---|
| Front tyre dimensions: | 3.00-18 |
| Rear tyre dimensions: | 3.75-18 |
| Front brakes: | Single disc |
| Rear brakes: | Expanding brake |
| Speed and acceleration |
|---|
| Top speed: | 140.0 km/h (87.0 mph) |
| Other specifications |
|---|
| Fuel capacity: | 17.00 litres (4.49 gallons) |
