GAS GAS MC 125 - 2023 Specifications and Reviews

The 2023 GAS GAS MC 125 is a competition-focused motocross bike designed for young riders and amateur racers stepping up to larger displacement classes. Powered by a responsive 124.8cc two-stroke engine producing 40 horsepower, it combines aggressive handling with modern suspension technology and Brembo braking for serious off-road performance. Known for its lightweight agility and race-proven reliability, this machine excels in amateur motocross competition and technical trail riding.

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General information

CategoryCross / motocross
Year2023
ModelGAS GAS MC 125

Engine and Transmission Specifications

ClutchWet multi-disc DS clutch, Brembo hydraulics
Transmission typeChain   (final drive)
Gearbox6-speed
IgnitionKokusan EMS
Fuel systemCarburettor. Mikuni TMX
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Power40.0 HP (29.2 kW)
Engine typeSingle cylinder, two-stroke
Capacity:124.8 ccm (7.62 cubic inches)

Brakes, suspension, Frame and wheels

WheelsWire spoked
Rear brakesSingle disc. 1-piston calipers
Diameter260 mm (10.2 inches)
Front brakesSingle disc. 1-piston calipers
Rear tire120/90-18
Front tire90/90-21
Rear wheel travel300 mm (11.8 inches)
Rear SuspensionWP XACT Monoshock with linkage
Front wheel travel310 mm (12.2 inches)
Front SuspensionWP XACT-USD, Ø 48 mm
Rake (fork angle)26.1°
Frame typeCentral double-cradle-type 25CrMo4 steel
 
 

Physical measures and capacities

Fuel capacity7.50 litres (1.98 US gallons)
Wheelbase1475 mm (58.1 inches)
Ground clearance375 mm (14.8 inches)
Seat height950 mm (37.4 inches) If adjustable, lowest setting.
Power/weight ratio0.4571 HP/kg
Dry weight87.5 kg (192.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsRed/white

Performance Profile & Rider Fit

Best For

Track90%
City5%
Cornering85%
Daily Riding5%
Touring8%
Passenger0%

Rider Profile

Best ForThis bike suits experienced off-road riders who are comfortable with an aggressive, race-bred two-stroke motocross machine.
PurposeBuilt purely for closed-course motocross racing and serious off-road competition, not for general transportation.
Rider FitIts tall seat height, kick starter, and lightweight but demanding two-stroke power delivery require good fitness, strength, and riding technique.
CharacterA raw, lightweight, high-revving two-stroke racer that rewards aggressive riding with sharp agility and explosive acceleration on the track.
Not Ideal ForThis is not the right bike for commuting, touring, carrying a passenger, or riders seeking comfort and ease of use.

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

Rider Fit Visualizer

2023 GAS GAS MC 125 Rider Ergonomics Assessment

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

Feet:

At 950mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2023 GAS GAS MC 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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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2023 GAS GAS MC 125 is a fantastic off-road motorcycle that packs a punch in a small package. With its powerful 125cc engine, this bike has plenty of get-up-and-go for whatever terrain you throw at it. The suspension is also top-notch, providing a smooth and stable ride even on the roughest trails. Plus, the overall design of the MC 125 is sleek and stylish, making it a head-turner on and off the track. Whether you're a beginner or a seasoned pro, this bike is sure to impress with its performance and reliability. Overall, the 2023 GAS GAS MC 125 is a solid choice for anyone in the market for a capable off-road motorcycle. Its powerful engine, excellent suspension, and stylish design make it a stand-out option in its class. Whether you're hitting the trails for some weekend fun or competing in a race, this bike is sure to deliver the performance and handling you need. If you're looking for a reliable and high-performing off-road motorcycle, the 2023 GAS GAS MC 125 is definitely worth considering.
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