What category is the 2011 GAS GAS MC 125?

General information
Category	Cross / motocross
Model	GAS GAS MC 125
Year	2011
Engine and Transmission Specifications
Clutch	Hydraulic multi-disc
Gearbox	6-speed
Ignition	Kokusan digital CDI Multispark
Fuel system	Carburettor. Keihin PWK 38mm
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. with 1-piston calipers
Front brakes diameter	260 mm (10.2 inches)
Front brakes	Single disc. with 1-piston calipers
Rear tyre dimensions	120/90-18
Front tyre dimensions	90/90-21
Rear suspension travel	320 mm (12.6 inches)
Rear suspension	One-piece aluminium swing arm, progressives system with Ohlins, shock absorber, 320 mm travel
Front suspension travel	295 mm (11.6 inches)
Front suspension	45 mm upside-down Marzocchi or Ohlins, 295 mm travel
Physical measures and capacities
Fuel capacity	9.50 litres (2.51 gallons)
Wheelbase	1,475 mm (58.1 inches)
Ground clearance	340 mm (13.4 inches)
Seat height	940 mm (37.0 inches) If adjustable, lowest setting.
Dry weight	92.0 kg (202.8 pounds)
Other specs
Maintenance	Find 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 For	This bike suits experienced off-road riders who are comfortable with an aggressive, race-bred two-stroke motocross machine.
Purpose	Built purely for closed-course motocross racing and serious off-road competition, not for general transportation.
Rider Fit	Its tall seat height, kick starter, and lightweight but demanding two-stroke power delivery require good fitness, strength, and riding technique.
Character	A raw, lightweight, high-revving two-stroke racer that rewards aggressive riding with sharp agility and explosive acceleration on the track.
Not Ideal For	This 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

Your height

Inseam (optional)

Units

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 2011 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.

Find bikes that fit your height →