GAS GAS Gas EC 125 - 2026 Specifications and Reviews

The 2026 GAS GAS EC 125 is a lightweight two-stroke enduro machine designed for young riders and beginners seeking an accessible entry into off-road competition. Known for its responsive Keihin fuel injection, direct reed valve engine, and nimble handling characteristics, it excels in technical terrain where maneuverability matters most. The liquid-cooled 124.8cc powerplant delivers predictable performance ideal for skill development.

2026
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General information

Color OptionsRed/black
CategoryEnduro / offroad
 
 

Engine and Transmission Specifications

StartingElectric
ClutchDS wet multi-disc clutch, Braktec hydraulics
Final DriveChain (final drive)
Gearbox6-speed
Cooling SystemLiquid
IgnitionVitesco Technologies EMS
InductionInjection. Keihin EFI, throttle body 39 mm
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression Ratio13.5:1
Engine DetailsDirect reed valve Boyesen RAD 93/2A
Capacity:124.8 ccm (7.62 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity9.00 litres (2.38 US gallons)
Wheelbase1489 mm (58.6 inches)
Ground Clearance354 mm (13.9 inches)
Overall Width830 mm (32.7 inches)
Overall Length2200 mm (86.6 inches)
Overall Height1260 mm (49.6 inches)
Seat Height956 mm (37.6 inches) If adjustable, lowest setting.
Dry Weight99.5 kg (219.4 pounds)

GAS GAS Gas EC 125 dimensions and frame

Wheels21 x 1.60´; 18 x 2.15´
Rear BrakesSingle disc
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesSingle disc
Rear Tyre140/80-18
Front Tyre90/90-21
Rear Wheel Travel300 mm (11.8 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front Wheel Travel300 mm (11.8 inches)
Front SuspensionWP XPLOR-USD, 48 mm

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specsReport missing specs or required updates.
CommentsSpanish made bike.
Electrical2 Ah battery.
Rake (fork angle)26.1°
Exhaust systemAluminium
Driveline520 X-Ring.
Lubrication system2-stroke-oil/fuel mixed 1:50
Engine typeSingle cylinder, two-stroke
Year2025
Motorcycle nameGAS GAS EC 125

Performance Profile & Rider Fit

Best For

Track20%
City15%
Cornering55%
Daily Riding15%
Touring15%
Passenger5%

Rider Profile

Best ForBest suited to competent to advanced off-road riders, as a lightweight 125cc two-stroke enduro demands active riding skill and clutch/throttle finesse rather than beginner forgiveness.
PurposeBuilt purely for technical enduro and off-road competition or trail riding, not as a road or commuting machine.
Rider FitThe tall 956 mm seat height and dirt-bike ergonomics favor taller or fit riders comfortable standing and shifting weight actively on rough terrain.
CharacterA featherweight, high-revving two-stroke that rewards aggressive, involved riding with explosive agility and razor-sharp handling in tight, technical off-road sections.
Not Ideal ForNot a good fit for riders wanting a comfortable, stable long-distance road or touring bike, or those seeking passenger-carrying practicality.

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

Rider Fit Visualizer

2026 GAS GAS Gas EC 125 Rider Ergonomics Assessment

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

Feet:

At 956mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2026 GAS 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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