1977 Yamaha DT 400 specifications
Available technical data for this model and year. Specifications can vary by market and version.
Technical specifications
| Displacement | 397.0 ccm (24.22 cubic inches) |
|---|---|
| Engine type | Single cylinder, two-stroke |
| Power | 21.0 HP (15.3 kW )) @ 5600 RPM |
| Compression | 6.4:1 |
| Bore x stroke | 85.0 x 70.0 mm (3.3 x 2.8 inches) |
| Fuel control | Membrane |
| Cooling system | Air |
| Gearbox | 5-speed |
| Transmission type | Chain (final drive) |
| Front brakes | Expanding brake |
| Rear brakes | Expanding brake |
| Front tyre | 3.00-21 |
| Rear tyre | 4.00-18 |
| Weight incl. oil, gas, etc | 141.0 kg (310.9 pounds) |
| Fuel capacity | 9.00 litres (2.38 US gallons) |
| Top speed | 136.0 km/h (84.5 mph) |
Source: Bikez: DT 400, 1977. Retrieved 2026-09-19. Match confidence: exact.
Years listed are the entries held in this archive, rather than a complete production history.
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