Trials Bikes
2010GAS GAS Halley 125 2T
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The 2010 GAS GAS Halley 125 2T is a lightweight trial motorcycle engineered for beginners and intermediate riders seeking technical off-road performance. Powered by a nimble 124cc two-stroke engine with liquid cooling and a six-speed gearbox, it excels in navigating tight sections and rocky terrain. The bike is renowned for its agile handling, responsive power delivery, and affordability in the competitive trial motorcycle segment.
- Capacity
- 124.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 99.0 kg
- 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
- Built purely for competitive and recreational trials riding, where the goal is tackling obstacles, balance, and technical terrain at very low speeds rather than covering distance or riding on roads.
- Built for
- A featherweight, high-travel-suspension two-stroke that rewards precise throttle and clutch control, feeling nimble, responsive, and almost bicycle-like in tight, technical situations.
- Not ideal for
- This bike is not suitable for riders wanting a comfortable commuter, a touring companion, a passenger-carrying bike, or any kind of sustained road or highway riding.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 124.0 ccm
- Power
- 15.0 HP (11.0 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1515 HP/kg (dry)
- Bore x stroke
- 54.0 x 54.5 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiple disks in oil bath, hydraulic
Dimensions & weight
- Wheelbase
- 1460 mm
- Seat height
- 945 mm
- Dry weight
- 99.0 kg
- Wet weight
- 107.0 kg
- Fuel capacity
- 7.40 litres
Chassis & suspension
- Frame
- Deltabox*, made with Cromoly tubing. Aluminium swing arm.
- Front suspension
- Fork, 41 mm.
- Rear suspension
- One-piece aluminium swing arm
- 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. Single-piston
- Rear brakes diameter
- 220 mm
- Front tyre
- 80/90-21
- Rear tyre
- 110/80-18
Other
- Color options
- Black/yellow
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 2T?
The 2010 GAS GAS Halley 125 2T has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the GAS GAS Halley 125 2T have?
The 2010 GAS GAS Halley 125 2T has a Power of 15.0 HP (11.0 kW).
How many gears does the GAS GAS Halley 125 2T have?
The 2010 GAS GAS Halley 125 2T has a Gearbox of 6-speed.
How much does the GAS GAS Halley 125 2T weigh?
The 2010 GAS GAS Halley 125 2T has a Dry weight of 99.0 kg (218.3 pounds).
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