Enduro Bikes
2009GAS GAS Halley 125
24 fields on record
The 2009 GAS GAS Halley 125 is a lightweight two-stroke enduro bike designed for amateur off-road riders and trail enthusiasts. Known for its nimble handling and compact size, the 124cc single-cylinder engine delivers accessible power while the long-travel suspension tackles rough terrain. Its liquid-cooled performance and six-speed gearbox make it ideal for learning cross-country riding techniques.
- Capacity
- 124.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- Not on record
Know it? Add it → - Seat height
- 945 mm
- Power
- 15.0 HP (11.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- This is a dedicated enduro bike built for tackling trails, technical terrain, and off-road competition rather than road use.
- Built for
- A nimble, lightweight two-stroke with sharp, playful handling and strong suspension travel that rewards an aggressive, active riding style over raw speed or comfort.
- Not ideal for
- Not a good choice for riders wanting a comfortable daily commuter, a passenger-friendly bike, or one capable of sustained high-speed road touring.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.0 ccm
- Power
- 15.0 HP (11.0 kW)
- Engine type
- Single, two-stroke
- Bore x stroke
- 54.0 x 54.5 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Clutch
- Multiple disks in oil bath, hydraulic
Dimensions & weight
Chassis & suspension
- Front suspension
- Fork, 41 mm.
- Rear suspension
- Single rear shock absorber system
- Front wheel travel
- 255 mm
- Rear wheel travel
- 246 mm
Brakes & wheels
- Front brakes
- Single disc. Twin piston caliper.
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 80/90-21
- Rear tyre
- 110/80-18
Other
- Color options
- Red
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the GAS GAS Halley 125?
The 2009 GAS GAS Halley 125 has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the GAS GAS Halley 125 have?
The 2009 GAS GAS Halley 125 has a Power of 15.0 HP (11.0 kW).
How many gears does the GAS GAS Halley 125 have?
The 2009 GAS GAS Halley 125 has a Gearbox of 6-speed.
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