What category is the 2009 GAS GAS Halley 125?

The 2009 GAS GAS Halley 125 has a Category of Enduro / offroad.

What is the engine size of the 2009 GAS GAS Halley 125?

The 2009 GAS GAS Halley 125 has a Capacity: of 124.00 ccm (7.57 cubic inches).

What type of engine does the 2009 GAS GAS Halley 125 have?

The 2009 GAS GAS Halley 125 has a Engine type of Single cylinder, two-stroke.

Is the 2009 GAS GAS Halley 125 air cooled or liquid cooled?

The 2009 GAS GAS Halley 125 has a Cooling system of Liquid.

How many gears does the 2009 GAS GAS Halley 125 have?

The 2009 GAS GAS Halley 125 has a Gearbox of 6-speed.

What is the seat height of the 2009 GAS GAS Halley 125?

The 2009 GAS GAS Halley 125 has a Seat height of 945 mm (37.2 inches) If adjustable, lowest setting..

GAS GAS Halley 125 - 2009 Specifications and Reviews

Name: 2009 GAS GAS Halley 125
Brand: GAS GAS

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.

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General information
Category	Enduro / offroad
Year	2009
Model	GAS GAS Halley 125

Engine and Transmission Specifications
Clutch	Multiple disks in oil bath, hydraulic
Gearbox	6-speed
Cooling system	Liquid
Fuel system	Carburettor. 26 mm
Bore x stroke	54.0 x 54.5 mm (2.1 x 2.1 inches)
Engine type	Single cylinder, two-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
Front brakes diameter	260 mm (10.2 inches)
Front brakes	Single disc. Twin piston caliper.
Rear tyre dimensions	110/80-18
Front tyre dimensions	80/90-21
Rear suspension travel	246 mm (9.7 inches)
Rear suspension	Single rear shock absorber system
Front suspension travel	255 mm (10.0 inches)
Front suspension	Fork, 41 mm.
Physical measures and capacities
Fuel capacity	7.40 litres (1.96 gallons)
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	Red

Performance Profile & Rider Fit

Best For

Track20%

City30%

Cornering55%

Daily Riding25%

Touring20%

Passenger10%

Rider Profile

Best For	Best suited to riders with at least some off-road or trail-riding experience who are comfortable with a tall, light, two-stroke enduro machine.
Purpose	This is a dedicated enduro bike built for tackling trails, technical terrain, and off-road competition rather than road use.
Rider Fit	The tall 945 mm seat height and long suspension travel favor taller or more athletic riders who can handle a light but physically demanding standing-ride style.
Character	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.

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

Rider Fit Visualizer

2009 GAS GAS Halley 125 Rider Ergonomics Assessment

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Feet:

At 945mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2009 GAS GAS Halley 125, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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