GAS GAS SM125: history, specs, pictures

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GAS GAS SM125
Manufacturer
Also called SM 125, SM125 Supermotard, SM 125 Supermotard, SM125 Halley, SM 125 Halley
Production 2002 - 2010
Engine
single cylinder, two-stroke
Bore / Stroke 54.0mm x 54.5mm
Horsepower 36.07 HP (26.9 KW) @ 10500RPM
Torque 18.59 ft/lbs (25.2 Nm) @ 10000RPM
Fuel System carburetor
Ignition digital cdi multispark.
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: multidisc hydraulically operated.
Suspension Front: 41 mm upside-down fork
Rear: one-piece aluminum swing arm. ohlins shock absorber.
Brakes Front: single disc. 2 pistons caliper
Rear: single disc
Front Tire 100/80-17
Rear Tire 120/70-17
Wheelbase 57.48 inches (1460 mm)
Seat Height 37.2 inches (945 mm)
Weight 218.26 pounds (99.0 Kg) (dry), 110.0 kg (wet)
Fuel Capacity 2.51 Gallon (9.50 Liters)
Manuals Service Manual


The GAS GAS SM125 Halley was a single cylinder, two-stroke standard produced by GAS GAS between 2002 and 2010. Max torque was 18.59 ft/lbs (25.2 Nm) @ 10000 RPM. Claimed horsepower was 36.07 HP (26.9 KW) @ 10500 RPM.

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, two-stroke. A 54.0mm bore x 54.5mm stroke result in a displacement of just 124.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 6-speed transmission. Power was moderated via the multidisc hydraulically operated..

Chassis[edit | edit source]

It came with a 100/80-17 front tire and a 120/70-17 rear tire. Stopping was achieved via single disc. 2 pistons caliper in the front and a single disc in the rear. The front suspension was a 41 mm upside-down fork while the rear was equipped with a one-piece aluminum swing arm. ohlins shock absorber.. The SM125 Halley was fitted with a 2.51 Gallon (9.50 Liters) fuel tank. The bike weighed just 218.26 pounds (99.0 Kg). The wheelbase was 57.48 inches (1460 mm) long.