These are the known mechanical and performance specifications for your 1979 Yamaha DT 400 MX.
Basic Specs
Engine
Displacement397.00 ccm (24.22 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression6.4:1
Bore/Stroke85.0 x 70.0 mm (3.3 x 2.8 inches)
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
CoolingAir
Performance
Horespower21.00 HP (15.3 kW)
Torque
Top Speed136.0 km/h (84.5 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity9.00 litres (2.38 gallons)
Emissions
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight
Wet Weight141.0 kg (310.9 pounds)
Wheels & Brakes
Front Tire/Tyre3.00-21
Rear Tire/Tyre4.00-18
Front BrakesExpanding brake
Front Brake Diameter
Rear BrakesExpanding brake
Rear Brake Diameter
Wheels
Comments