What category is the 2010 GAS GAS Halley 125 4T?

The 2010 GAS GAS Halley 125 4T has a Category of Trial.

What is the engine size of the 2010 GAS GAS Halley 125 4T?

The 2010 GAS GAS Halley 125 4T has a Capacity: of 124.00 ccm (7.57 cubic inches).

What type of engine does the 2010 GAS GAS Halley 125 4T have?

The 2010 GAS GAS Halley 125 4T has a Engine type of Single cylinder, four-stroke.

Is the 2010 GAS GAS Halley 125 4T air cooled or liquid cooled?

The 2010 GAS GAS Halley 125 4T has a Cooling system of Air.

How many gears does the 2010 GAS GAS Halley 125 4T have?

The 2010 GAS GAS Halley 125 4T has a Gearbox of 6-speed.

What is the seat height of the 2010 GAS GAS Halley 125 4T?

The 2010 GAS GAS Halley 125 4T has a Seat height of 945 mm (37.2 inches) If adjustable, lowest setting..

GAS GAS Halley 125 4T - 2010 Specifications and Reviews

Name: 2010 GAS GAS Halley 125 4T
Brand: GAS GAS

The 2010 GAS GAS Halley 125 4T is a lightweight trial motorcycle designed for beginners and youth riders seeking to master technical riding skills. Powered by a reliable 124cc air-cooled four-stroke engine paired with a six-speed gearbox, it excels in navigating tight obstacles and challenging terrain. Known for its nimble handling and durable Cromoly steel frame, the Halley 125 remains a popular choice for entry-level trial competition and training.

⇄ Compare against another bike 📅 All Years

2010

❮❯

Add/Upload pictures for this motorcycle

General information
Category	Trial
Year	2010
Model	GAS GAS Halley 125 4T
Engine and Transmission Specifications
Clutch	Multidisc hydraulically operated
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Air
Fuel system	Carburettor. 26 mm
Bore x stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Engine type	Single cylinder, four-stroke
Capacity:	124.00 ccm (7.57 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes diameter	220 mm (8.7 inches)
Rear brakes	Single disc. Single-piston
Front brakes diameter	260 mm (10.2 inches)
Front brakes	Single disc. 2-piston caliper.
Rear tyre dimensions	4.10-18
Front tyre dimensions	2.75-21
Rear suspension travel	246 mm (9.7 inches)
Rear suspension	One-piece aluminium swing arm
Front suspension travel	255 mm (10.0 inches)
Front suspension	Fork, 41 mm.
Frame type	Made with Cromoly tubing. Aluminium swing arm. .

Physical measures and capacities
Wheelbase	1,460 mm (57.5 inches)
Seat height	945 mm (37.2 inches) If adjustable, lowest setting.
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Black
Starter	Kick

Performance Profile & Rider Fit

Best For

Track10%

City15%

Cornering60%

Daily Riding10%

Touring8%

Passenger5%

Rider Profile

Best For	This is a specialist trial machine best suited to riders who already have off-road or trials experience, or are actively learning technical balance skills.
Purpose	Built purely for low-speed technical trials riding over obstacles, rocks, and tight terrain rather than any kind of road or touring use.
Rider Fit	Extremely light and slim with a tall, narrow seat that's really just a fuel-tank cover, demanding active standing riding and good balance rather than raw strength.
Character	A precise, featherweight, high-travel-suspension tool that rewards finesse and clutch control far more than outright power.
Not Ideal For	This is not the bike for anyone wanting a comfortable seat, sustained speed, or a practical daily commuter or touring machine.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.