GAS GAS EC 125 - 2003 Specifications and Reviews

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General information

CategoryEnduro / offroad
ModelGAS GAS EC 125
Year2003

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Torque25.20 Nm (2.6 kgf-m or 18.6 ft.lbs) @ 10000
Power36.80
Engine typeSingle cylinder, two-stroke
Capacity:125.00 ccm (7.63 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc
Rear suspension travel320 mm (12.6 inches)
Front suspension travel295 mm (11.6 inches)
 
 

Physical measures and capacities

Fuel capacity9.50 litres (2.51 gallons)
Wheelbase1,475 mm (58.1 inches)
Ground clearance340 mm (13.4 inches)
Seat height940 mm (37.0 inches) If adjustable, lowest setting.

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track30%
City25%
Cornering80%
Daily Riding20%
Touring15%
Passenger5%

Rider Profile

Best ForThis bike suits experienced off-road riders comfortable with a peaky two-stroke powerband and tall, minimalist enduro ergonomics.
PurposeBuilt purely for technical enduro and trail riding, not for road use or general commuting.
Rider FitIts tall 950mm seat height and lightweight 96kg dry chassis demand decent rider fitness and leg length but reward agility over brute strength.
CharacterA raw, lightweight two-stroke enduro weapon that thrives on aggressive throttle input and quick direction changes through tight, technical terrain.
Not Ideal ForNot suitable for riders seeking comfort, passenger capability, highway touring, or a forgiving low-maintenance daily ride.

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

Rider Fit Visualizer

2003 GAS GAS EC 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 940mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 GAS GAS EC 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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