These are the known mechanical and performance specifications for your 1979 Yamaha RX 125.
Basic Specs
Engine
Displacement125.00 ccm (7.63 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression6.9:1
Bore/Stroke56.0 x 50.0 mm (2.2 x 2.0 inches)
Valves/Cylinder
FuelingCarburettor. Mikuni VM24SH
IgnitionMagneto
ExhaustSingle chrome pipe
LubricationAutolube
CoolingAir
Performance
Horespower13.00 HP (9.5 kW)
Torque13.34 Nm (1.4 kgf-m or 9.8 ft.lbs)
Top Speed
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity10.00 litres (2.64 gallons)
Emissions
Chassis
Frame TypePainted tubular steel
Rake
Trail
Front SuspensionTelescopic forks
Front Travel
Rear SuspensionSwing arm twin shocks
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,060 mm (41.7 inches)
Total Length1,915 mm (75.4 inches)
Total Width730 mm (28.7 inches)
Ground Clearance160 mm (6.3 inches)
Wheelbase1,240 mm (48.8 inches)
Dry Weight96.0 kg (211.6 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre3/0-18
Rear Tire/Tyre3/0-18
Front BrakesSingle disc
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments