| Main information |
| Model: |
Yamaha DT 125 MX |
| Year: |
1978 |
| Type: |
Enduro / offroad |
| Engine and transmission |
| Bore x stroke: |
56.0 x 50.0 mm (2.2 x 2.0 inches) |
| Fuel control: |
Membrane |
| Gearbox: |
6-speed |
| Torque: |
1.53 Nm (0.2 kgf-m or 1.1 ft.lbs) @ 6500 RPM |
| Top speed: |
110.0 km/h (68.4 mph) |
| Power: |
14.00 HP (10.2 kW)) @ 6500 RPM |
| Displacement: |
123.00 ccm (7.51 cubic inches) |
| Cooling system: |
Air |
| Lubrication system: |
Autolube |
| Engine type: |
Single cylinder, two-stroke |
| Transmission type,final drive: |
Chain |
| Fuel system: |
Carburettor. Mikuni VM 24 SH |
| Max RPM: |
8000 |
| Chassis, suspension, brakes and wheels |
| Rear brakes diameter: |
130 mm (5.1 inches) |
| Front brakes diameter: |
130 mm (5.1 inches) |
| Rear brakes: |
Expanding brake (drum brake) |
| Rear suspension: |
Monocross |
| Front brakes: |
Expanding brake (drum brake) |
| Front suspension: |
Hydraulic telescopic fork |
| Rake (fork angle): |
60.0° |
| Rear suspension travel: |
145 mm (5.7 inches) |
| Front suspension travel: |
180 mm (7.1 inches) |
| Physical measures and dimensions |
| Seat height: |
845 mm (33.3 inches) If adjustable, lowest setting. |
| Ground clearance: |
265 mm (10.4 inches) |
| Oil capacity: |
1.00 litres (0.07 quarts) |
| Fuel capacity: |
7.00 litres (1.85 gallons) |
| Overall height: |
1,120 mm (44.1 inches) |
| Overall length: |
2,085 mm (82.1 inches) |
| Overall width: |
865 mm (34.1 inches) |
| Weight incl. oil, gas, etc: |
102.0 kg (224.9 pounds) |
| Reserve fuel capacity: |
1.00 litres (0.26 gallons) |
| Power/weight ratio: |
0.1474 HP/kg |
| Dry weight: |
95.0 kg (209.4 pounds) |
| Other features |
| Starter: |
Kick |
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