1984 Yamaha XS 400 DOHC (reduced effect) specifications
Available technical data for this model and year. Specifications can vary by market and version.
Technical specifications
| Displacement | 399.0 ccm (24.35 cubic inches) |
|---|---|
| Engine type | Twin, four-stroke |
| Power | 27.0 HP (19.7 kW )) @ 8000 RPM |
| Compression | 9.7:1 |
| Bore x stroke | 69.0 x 53.4 mm (2.7 x 2.1 inches) |
| Valves per cylinder | 2 |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Cooling system | Air |
| Gearbox | 6-speed |
| Transmission type | Chain (final drive) |
| Front brakes | Single disc |
| Rear brakes | Expanding brake |
| Front tyre | 3.00-18 |
| Rear tyre | 4.10-18 |
| Weight incl. oil, gas, etc | 187.0 kg (412.3 pounds) |
| Fuel capacity | 18.00 litres (4.76 US gallons) |
| Top speed | 143.0 km/h (88.9 mph) |
Source: Bikez: XS 400 DOHC (reduced effect), 1984. 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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