GAS GAS SM 250 - 2004 Specifications and Reviews

The 2004 GAS GAS SM 250 is a lightweight supermoto designed for riders seeking nimble street performance and playful handling characteristics. Its liquid-cooled 250cc single-cylinder engine and compact 101kg chassis make it ideal for urban commuting and spirited riding. Known for its agility and accessible seat height, it appeals to intermediate riders transitioning to street-focused motorcycles.

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General information

CategorySuper motard
Year2004
ModelGAS GAS SM 250

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor
Bore x stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Stroke2
Engine typeSingle cylinder
Capacity:250.00 ccm (15.26 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,475 mm (58.1 inches)
Ground clearance340 mm (13.4 inches)
Seat height940 mm (37.0 inches) If adjustable, lowest setting.
Dry weight101.0 kg (222.7 pounds)

GAS GAS SM 250 dimensions and frame

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tyre dimensions150/60-17
Front tyre dimensions120/60-17
Rear suspension travel320 mm (12.6 inches)
Rear suspensionProgressive system, Ohlins shock absorber.
Front suspension travel295 mm (11.6 inches)
Front suspensionMarzocchi inverted fork, 50 mm
Frame typeTType deltabox, made of rectangular profile Cr-Mo
 
 

Speed and acceleration

Color optionsRed/grey/black
Fuel capacity9.50 litres (2.51 gallons)

Other specs

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

Performance Profile & Rider Fit

5.5s
0-60 mph (est.)

Best For

Track75%
City65%
Cornering95%
Daily Riding40%
Touring15%
Passenger20%

Rider Profile

Best ForBest suited to intermediate or experienced riders who appreciate a light, sharp-handling machine that demands active input.
PurposeBuilt for supermotard thrills, tight cornering, and flickable fun on twisty tarmac rather than covering long distances.
Rider FitIts tall seat height and lightweight, top-heavy-feeling standing riding position favor taller or more agile riders comfortable with a dirt-bike-derived stance.
CharacterA sharp, playful, high-revving single-cylinder machine that rewards aggressive riding and quick direction changes.
Not Ideal ForNot the right choice for riders wanting a comfortable, low-maintenance, long-distance touring companion.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2004 GAS GAS SM 250 Rider Ergonomics Assessment

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

Feet:

At 940mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2004 GAS GAS SM 250, with a stretched knee angle of around 160 degrees and a forward-leaning 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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