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YAMAHA RD 125 (1973-1980) Specs, Performance & Photos

Segment: Clasic
Production years: 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980

YAMAHA RD 125 1973-1980 4 Photos
YAMAHA RD 125 (1973-1980)YAMAHA RD 125 (1973-1980)YAMAHA RD 125 (1973-1980)YAMAHA RD 125 (1973-1980)

The Yamaha RD 125 was a motorcycle manufactured by Yamaha from 1973 to 1990, with the RD designation that indicated its orientation for race development. The bike was largely similar to the AS3/AS2.

Compared to its predecessor, the RD 125 motorcycle had a teardrop-shaped fuel tank for a slimmer look, a 40 mm longer wheelbase, the air filter was moved under the side cover, and the oil filter neck under the seat.

In the visual department, the bike packed standard features, such as a round headlight with two instrument gauges mounted on top, a teardrop-shaped fuel tank, a two-piece dual seat, a dual exhaust system with a muffler on each side, and lightweight wire-spoke wheels.

The bike was built around a steel tube frame with a 28 mm telescopic fork on the front and a 150 mm drum braking unit. In contrast, the rear end was handled by preload-adjustable side-mounted shocks and a 130 mm drum unit.

As for the power figures, the 1973 Yamaha RD 125 had its soul brought to life by a 124cc two-stroke parallel-twin air-cooled engine, managed by two Teikei carburetors, delivering an output power of 17 hp with maximum strength at 8,500 rpm and 13 Nm (10 lb-ft) torque at 8,000 rpm.

The bike's engine was coupled to a five-speed manual transmission, sending the power to the rear wheel through a final chain drive, pushing the small motorcycle to 130 kph (81 mph).

YAMAHA RD 125 1973-1980

YAMAHA RD 125 125

engine specs
Type:Parallel twin cylinder, two stroke, air-cooled
Displacement:124 cm3
Bore X Stroke:1.7x1.7 in OR 43 mm
Compression Ratio:6.8:1
Horsepower:17/8500 KW(hp)/RPM
Torque:10/8000 lb-ft/RPM OR 14/8000 Nm/RPM
Fuel System:Carburetors
transmission specs
Gearbox:5-Speed
Clutch:Wet multi-plate
Primary Drive:-
Final Drive:Chain
chassis specs
Frame:Steel tube
Front Suspension:Telescopic forks
Rear Suspension:Dual rear shock preload adjustable
Front Brake:Drum
Rear Brake:Drum
dimension specs
Overall Length:-
Overall Width:-
Seat Height:29.5 in OR 749 mm
Wheelbase:49 in OR 1245 mm
Ground Clearance:-
Weight:254 lbs OR 115 kg
Fuel Capacity:3 gallons OR 11.4 L
tyres specs
Front:2.75-18
Rear:3.00-18
power system specs
Power pack:-
Nominal Capacity:-
Maximum Capacity:-
Charger type:-
Charging time (normal):-
Charging time (quick):-
Range:-
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