Motocross Bikes

2006GAS GAS MC 125

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The 2006 GAS GAS MC 125 is a lightweight motocross machine designed for young riders and beginners entering competitive off-road racing. Powered by a 124cc single-cylinder two-stroke engine with a 6-speed transmission, it delivers responsive power delivery ideal for learning fundamental dirt bike skills. Known for its manageable weight of 92kg and agile handling, this Spanish-built machine excels in youth motocross classes and recreational trail riding.

Capacity: 124.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 92.0 kg
Seat height: 940 mm
Power: 15.0 HP (11.0 kW)

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What’s new for the 2006 GAS GAS MC 125

vs the 2005

Spec	2005	2006
Front suspension	Marzocchi inverted fork, 45 mm	45 mm upside-down Marzocchi* fork. Upside-down Öhlins* fork
Rear suspension	Progressive system, Ohlins shock absorber.	One-piece aluminium swing arm, progressives system with Öhlins, shock absorber.
Front brakes	Single disc	Double disc

Other years 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail98%

Cornering85%

City riding5%

Daily riding5%

Touring8%

Two-up0%

Track90%

Best for: Built purely for closed-course motocross racing and serious off-road competition, not for general transportation.
Built for: 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.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 940mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2006 GAS GAS MC 125, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 124.0 ccm
Power: 15.0 HP (11.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.1630 HP/kg (dry)
Bore x stroke: 54.0 x 54.5 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Kokusan* digital CDI Multispark
Lubrication system: 2% mixture

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Hydraulic multi-disc

Dimensions & weight

Wheelbase: 1475 mm
Seat height: 940 mm
Dry weight: 92.0 kg
Fuel capacity: 9.50 litres
Ground clearance: 340 mm

Chassis & suspension

Frame: Deltabox built in chrome molybden rectangular tubing
Front suspension: 45 mm upside-down Marzocchi* fork. Upside-down Öhlins* fork
Rear suspension: One-piece aluminium swing arm, progressives system with Öhlins, shock absorber.
Front wheel travel: 295 mm
Rear wheel travel: 310 mm
Rake (fork angle): 26.1°

Brakes & wheels

Front brakes: Double disc
Front brakes diameter: 260 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 60/90-14
Rear tyre: 80/80-12

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2004	2006	2010	2016	2021	2027
Capacity	124 cc	124 cc	124 cc	125 cc	125 cc	125 cc
Dry weight	92 kg	92 kg	92 kg	92 kg	88 kg	93 kg
Seat height	940 mm	940 mm	940 mm	940 mm	950 mm	956 mm
Fuel capacity	9.5 L	9.5 L	9.5 L	9.5 L	7 L	7.9 L