Suzuki GP125: history, specs, pictures

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Suzuki GP125
Also called GP 125
Production 1978 - 1981
Class Classic
single cylinder, two-stroke
Bore / Stroke 56.0mm x 50.0mm
Compression ratio 6.8:1
Top Speed 73 mph (117 km/h)
Horsepower 9.39 HP (7.0 KW) @ 8000RPM
Torque 8.85 ft/lbs (12.0 Nm) @ 7500RPM
Fuel System Carburetor
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: Wet multi-plate
Suspension Front: Telescopic, Oil Dampened
Rear: Swinging Arm, Oil Dampened
Brakes Front: single disc
Rear: expanding brake
Front Tire 2.75-18
Rear Tire 3.00-18
Wheelbase 48.58 inches (1234 mm)
Length 74.61 inches (1895 mm)
Width 29.49 inches (749 mm)
Weight 103.0 kg (wet)
Recommended Oil Suzuki ECSTAR 10w40
Fuel Capacity 2.64 Gallon (10.00 Liters)
Manuals Service Manual

The Suzuki GP125 was a single cylinder, two-stroke Classic motorcycle produced by Suzuki between 1978 and 1981. It could reach a top speed of 73 mph (117 km/h). Max torque was 8.85 ft/lbs (12.0 Nm) @ 7500 RPM. Claimed horsepower was 9.39 HP (7.0 KW) @ 8000 RPM.


The engine was a air cooled single cylinder, two-stroke. A 56.0mm bore x 50.0mm stroke result in a displacement of just 123.0 cubic centimeters. Fuel was supplied via a rotary valves.


The bike has a 6-speed transmission. Power was moderated via the Wet multi-plate.


It came with a 2.75-18 front tire and a 3.00-18 rear tire. Stopping was achieved via single disc in the front and a expanding brake in the rear. The front suspension was a Telescopic, Oil Dampened while the rear was equipped with a Swinging Arm, Oil Dampened. The GP125 was fitted with a 2.64 Gallon (10.00 Liters) fuel tank. The wheelbase was 48.58 inches (1234 mm) long.

1978 - 1981 Suzuki GP 125[edit]

1978 - 1981 Suzuki GP 125

This bike its a low cost, economy version of the GT 125/RG 125 single two-stroke. The model name GP was apparently adopted from racing world, the GP 125 shared the bore and stroke dimensions with the 1976/1977 Suzuki RG 500 works racer.

In Media[edit]