Supermotos
2004GAS GAS SM 125
28 fields on record
The 2004 GAS GAS SM 125 is a lightweight super motard designed for nimble urban riding and enthusiast-level fun. Its 124cc liquid-cooled single-cylinder engine and minimal 100kg weight make it ideal for agile riders seeking responsive handling and manageable performance. Best known for exceptional maneuverability and approachable street-oriented capability, this Spanish-built machine suits learners and experienced riders alike.
- Capacity
- 124.0 ccm
- Engine
- Single
- Gearbox
- 6-speed
- Dry weight
- 100.0 kg
- Seat height
- 940 mm
- Power
- 36.8 HP (26.9 kW)
What’s new for the 2004 GAS GAS SM 125
vs the 2003| Spec | 2003 | 2004 |
|---|---|---|
| Power | 36.8 HP (27.1 kW) @ 10000 RPM | 36.8 HP (26.9 kW) |
| Torque | 25.2 Nm (2.6 kgf-m or 18.6 ft.lbs) | not listed |
| Seat height | 900 mm (35.4 inches) | 940 mm (37.0 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for tight, twisty roads and supermoto-style thrills, prioritizing agility and sharp handling over outright speed or long-distance capability.
- Built for
- A playful, high-revving single-cylinder supermoto with premium Marzocchi and Ohlins suspension that rewards an aggressive, engaged riding style.
- Not ideal for
- Not a good fit for riders seeking a comfortable long-haul tourer, a passenger-friendly bike, or serious off-road adventure capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.0 ccm
- Power
- 36.8 HP (26.9 kW)
- Engine type
- Single
- Power/weight ratio
- 0.3680 HP/kg (dry)
- Bore x stroke
- 54.0 x 54.5 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1475 mm
- Seat height
- 940 mm
- Dry weight
- 100.0 kg
- Fuel capacity
- 9.50 litres
- Ground clearance
- 340 mm
Chassis & suspension
- Frame
- TType deltabox, made of rectangular profile Cr-Mo
- Front suspension
- Marzocchi inverted fork, 50 mm
- Rear suspension
- Progressive system, Ohlins shock absorber.
- Front wheel travel
- 295 mm
- Rear wheel travel
- 320 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 120/60-17
- Rear tyre
- 150/60-17
Other
- Comments
- Listed power is the full-power version; a learner-restricted version rated 11 kW (15 hp) was also sold.
Specs last verified against published sources: .
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 | 2002 | 2003 | 2004 |
|---|---|---|---|
| Capacity | 124 cc | 124 cc | 124 cc |
| Dry weight | 100 kg | 100 kg | 100 kg |
| Seat height | 900 mm | 900 mm | 940 mm |
| Fuel capacity | 9.5 L | 9.5 L | 9.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the GAS GAS SM 125?
The 2004 GAS GAS SM 125 has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the GAS GAS SM 125 have?
The 2004 GAS GAS SM 125 has a Power of 36.8 HP (26.9 kW).
How many gears does the GAS GAS SM 125 have?
The 2004 GAS GAS SM 125 has a Gearbox of 6-speed.
How much does the GAS GAS SM 125 weigh?
The 2004 GAS GAS SM 125 has a Dry weight of 100.0 kg (220.5 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.