GAS GAS MC 125 - 2013 Specifications and Reviews

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General information

CategoryCross / motocross
ModelGAS GAS MC 125
Year2013

Engine and Transmission Specifications

ClutchHydraulic multi-disc
Gearbox6-speed
IgnitionKokusan digital CDI Multispark
Fuel systemCarburettor. Keihin PWK 38mm
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Engine typeSingle cylinder, two-stroke
Capacity:124.00 ccm (7.57 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. with 1-piston calipers
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc. with 1-piston calipers
Rear tyre dimensions120/90-18
Front tyre dimensions90/90-21
Rear suspension travel320 mm (12.6 inches)
Rear suspensionOne-piece aluminium swing arm, progressives system with Ohlins, shock absorber, 320 mm travel
Front suspension travel295 mm (11.6 inches)
Front suspension45 mm upside-down Marzocchi or Ohlins, 295 mm travel
 
 

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.
Dry weight92.0 kg (202.8 pounds)

Other specs

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

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

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

Feet:

At 940mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with cannot reach comfortably on the 2013 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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