1978 Yamaha DT 125 MX Specs

motorcycle specs

These are the known mechanical and performance specifications for your 1978 Yamaha DT 125 MX.

Basic Specs

Year1978
MakeYamaha
ModelYamaha DT 125 MX
Cost

Engine

Displacement123.00 ccm (7.51 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM8000
Compression
Bore/Stroke56.0 x 50.0 mm (2.2 x 2.0 inches)
Valves/Cylinder
FuelingCarburettor. Mikuni VM 24 SH
Ignition
Exhaust
LubricationAutolube
CoolingAir

Drivetrain

Gearbox6-speed
Final DriveChain
Clutch
Driveline

Performance

Horespower14.00 HP (10.2 kW)
Torque1.53 Nm (0.2 kgf-m or 1.1 ft.lbs)
Top Speed110.0 km/h (68.4 mph)

Fuel Economy & Polution

Fuel Consumption
Fuel Capacity7.00 litres (1.85 gallons)
Emissions

Chassis

Frame Type
Rake60.0°
Trail
Front SuspensionHydraulic telescopic fork
Front Travel180 mm (7.1 inches)
Rear SuspensionMonocross
Rear Travel145 mm (5.7 inches)
Seat
Seat Height845 mm (33.3 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,120 mm (44.1 inches)
Total Length2,085 mm (82.1 inches)
Total Width865 mm (34.1 inches)
Ground Clearance265 mm (10.4 inches)
Wheelbase
Dry Weight95.0 kg (209.4 pounds)
Wet Weight102.0 kg (224.9 pounds)

Wheels & Brakes

Front Tire/Tyre
Rear Tire/Tyre
Front BrakesExpanding brake (drum brake)
Front Brake Diameter130 mm (5.1 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter130 mm (5.1 inches)
Wheels

Comments

It appears you're interested in specifications for the Yamaha DT 125 MX. This Enduro / offroad model is powered by a Single cylinder, two-stroke engine with 123.00 ccm (7.51 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. Mikuni VM 24 SH allowing this machine to produce its 14.00 HP (10.2 kW) horsepower and 1.53 Nm (0.2 kgf-m or 1.1 ft.lbs) torque. According to our records engine heat of the Yamaha DT 125 MX is moderated by Air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is and the rear is . The entire package is supported by the frame, . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The Yamaha DT 125 MX was launched in 1978, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.