General information |
Model name
|
Yamaha XS 400 |
Year
|
1979 |
Category
|
Classic |
Rating
|
2.9 See the detailed rating of design and look, engine performance, reliability, fun-factor, etc. Compare with any other bike. |
Engine and transmission |
Displacement
|
392.0 ccm (23.92 cubic inches) |
Engine type
|
Twin, four-stroke |
Power
|
27.0 HP (19.7 kW)) @ 7000 RPM |
Torque
|
31.2 Nm (3.2 kgf-m or 23.0 ft.lbs) @ 6000 RPM |
Top speed
|
140.0 km/h (87.0 mph) |
Compression
|
9.2:1 |
Bore x stroke
|
69.0 x 52.4 mm (2.7 x 2.1 inches) |
Valves per cylinder
|
2 |
Fuel system
|
Injection. 2 x Mikuni BS32 |
Fuel control
|
Overhead Cams (OHC) |
Ignition
|
Battery ignition - With contact breaker points |
Lubrication system
|
Pressure-lubricated wet sump |
Cooling system
|
Air |
Gearbox
|
6-speed |
Transmission type
|
Chain (final drive) |
Clutch
|
Wet multiplate |
Chassis, suspension, brakes and wheels |
Front suspension
|
Telescopic fork |
Rear suspension
|
Dual shocks swing arm, preload adjustable |
Front tire
|
3.00-18 |
Rear tire
|
3.50-18 |
Front brakes
|
Single disc |
Rear brakes
|
Expanding brake |
Physical measures and capacities |
Dry weight
|
182.0 kg (401.2 pounds) |
Weight incl. oil, gas, etc
|
182.0 kg (401.2 pounds) |
Power/weight ratio
|
0.1484 HP/kg |
Seat height
|
780 mm (30.7 inches) If adjustable, lowest setting. |
Wheelbase
|
1364 mm (53.7 inches) |
Fuel capacity
|
17.00 litres (4.49 US gallons) |
Other specifications |
Starter
|
Electric |
Electrical
|
Starting battery. |
Update specs | Report missing specs or required updates. |
Further information |
Insurance costs | Compare US insurance quotes from the nation's top providers. |
Parts finder | CMSNL provides
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Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
Ask questions | Join the 79 Yamaha XS 400 discussion group or the general Yamaha discussion group. |
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