GAS GAS SM 125 - 2004 Specifications and Reviews
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.
General information | |
| Category | Super motard |
| Year | 2004 |
| Model | GAS GAS SM 125 |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Fuel system | Carburettor |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 124.00 ccm (7.57 cubic inches) |
Physical measures and capacities | |
| 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 | 100.0 kg (220.5 pounds) |
| | |
GAS GAS SM 125 dimensions and frame | |
| Rear brakes diameter | 220 mm (8.7 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 300 mm (11.8 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 150/60-17 |
| Front tyre dimensions | 120/60-17 |
| Rear suspension travel | 320 mm (12.6 inches) |
| Rear suspension | Progressive system, Ohlins shock absorber. |
| Front suspension travel | 295 mm (11.6 inches) |
| Front suspension | Marzocchi inverted fork, 50 mm |
| Frame type | TType deltabox, made of rectangular profile Cr-Mo |
| | |
Speed and acceleration | |
| Fuel capacity | 9.50 litres (2.51 gallons) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
Performance Profile & Rider Fit
7.5s
0-60 mph (est.)
Best For
Track70%
City75%
Cornering92%
Daily Riding45%
Touring15%
Passenger20%
Rider Profile
| Best For | Best suited to intermediate or experienced riders who want a light, flickable bike to sharpen their cornering skills rather than a first-time beginner machine. |
| Purpose | Built for tight, twisty roads and supermoto-style thrills, prioritizing agility and sharp handling over outright speed or long-distance capability. |
| Rider Fit | Its low 100 kg dry weight and slim chassis make it very manageable for shorter or lighter riders, though the 940 mm seat height requires reasonable inseam length. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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