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Motorcycles Specs > Yamaha > Yamaha DT 125 MX

Yamaha DT 125 MX Specs

The Yamaha DT 125 MX model is a Enduro / offroad bike manufactured by Yamaha . In this version sold from year 1978 , the dry weight is 95.0 kg (209.4 pounds) and it is equiped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 14.00 HP (10.2 kW) @ 6500 RPM and a maximum torque of 1.53 Nm (0.2 kgf-m or 1.1 ft.lbs) @ 6500 RPM . With this drive-train, the Yamaha DT 125 MX is capable of reaching a maximum top speed of 110.0 km/h (68.4 mph) . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha DT 125 MX have a  frame with front suspension being Hydraulic telescopic fork and in the rear suspension it is equiped with Monocross . Stock tire sizes are  on the front, and  on the rear. As for stopping power, the Yamaha DT 125 MX braking system includes Expanding brake (drum brake) size 130 mm (5.1 inches) at the front and Expanding brake (drum brake) size 130 mm (5.1 inches) at the rear. 

Yamaha DT 125 MX General Information

Brand Yamaha 
Model Yamaha DT 125 MX 
Year 1978 
Year 1978 
Category Enduro / offroad 
Factory Warranty (Years / miles)  

Yamaha DT 125 MX Dimensions, Aerodynamics and weight

Frame type  
Seat details  
Wheelbase  
Length 2,085 mm (82.1 inches) 
Width 865 mm (34.1 inches) 
Height 1,120 mm (44.1 inches) 
Seat Height 845 mm (33.3 inches) If adjustable, lowest setting. 
Alternate Seat Height  
Ground Clearance 265 mm (10.4 inches) 
Trail size  
Wheels details  
Front Tyres - Rims dimensions  
Rear Tyres - Rims dimensions  
Front brakes Expanding brake (drum brake) 
Rear brakes Expanding brake (drum brake) 
Front Brakes Dimensions - Disc Dimensions 130 mm (5.1 inches) 
Rear Brakes Dimensions - Disc Dimensions 130 mm (5.1 inches) 
Curb Weight (including fluids) 102.0 kg (224.9 pounds) 
Dry Weight 95.0 kg (209.4 pounds) 
Front Percentage of Weight  
Rear Percentage of Weight  
Weight-Power Output Ratio : 0.1474 HP/kg 
Fuel Tank Capacity 7.00 litres (1.85 gallons) 
Reserve Fuel Capacity 1.00 litres (0.26 gallons) 
Carrying Details and Capacity  
Front Suspension Hydraulic telescopic fork 
Front Suspension Travel 180 mm (7.1 inches) 
Rear Suspension Monocross 
Rear Suspension Travel 145 mm (5.7 inches) 

Yamaha DT 125 MX Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, two-stroke 
Engine details  
Fuel system Carburettor. Mikuni VM 24 SH 
Engine size - Displacement - Engine capacity 123.00 ccm (7.51 cubic inches) 
Bore x Stroke 56.0 x 50.0 mm (2.2 x 2.0 inches) 
Compression Ratio  
Number of valves per cylinder  
Camshaft Valvetrain Configuration Membrane 
Maximum power - Output - Horsepower 14.00 HP (10.2 kW) @ 6500 RPM 
Maximum torque 1.53 Nm (0.2 kgf-m or 1.1 ft.lbs) @ 6500 RPM 
Engine Maximum RPM 8000 
Cooling system Air 
Lubrication system Autolube 
Engine oil capacity 1.00 litres (0.07 quarts) 
Exhaust system  
Gearbox 6-speed 
Transmission type, final drive ratio Chain 
Clutch type  
Driveline  

Yamaha DT 125 MX Performance

Top Speed 110.0 km/h (68.4 mph) 
Acceleration 0 to 100 km/h (0 to 62 mph)  
Acceleration 0 to 400m (1/4 mile)  
Recuperation 60 to 140 km/h in highest gear  
Fuel Consumption - MPG - Economy - Efficiency  
CO2 emissions  
Emissions  

Yamaha DT 125 MX Electrical Systems, Ignition and Equipment

Ignition Type  
Electrical Details  
Starter Type Kick 
Instruments  
Lights