Supermotos

2004GAS GAS SM 50

23 fields on record

The 2004 GAS GAS SM 50 is a lightweight supermotard designed for riders seeking nimble urban agility and dirt-to-street versatility. Its compact 399cc liquid-cooled single cylinder delivers responsive performance ideal for both novice and experienced riders navigating mixed terrain. Known for exceptional maneuverability and low seat height, this Spanish machine excels in tight city environments and casual off-road exploration.

Capacity: 399.0 ccm
Engine: Single
Gearbox: 6-speed
Dry weight: 93.0 kg
Seat height: 920 mm
Power: Not on record
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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail35%

Cornering92%

City riding70%

Daily riding45%

Touring20%

Two-up15%

Track75%

Best for: Built for flicking through tight corners, hooligan street riding, and light track or supermoto-day use rather than long-distance travel.
Built for: A playful, nimble, high-strung single-cylinder machine that rewards an energetic, corner-hungry riding style.
Not ideal for: Not a good fit for riders wanting a relaxed, comfortable, or high-speed touring machine, or anyone planning to regularly carry a passenger.

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 920mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2004 GAS GAS SM 50, with a stretched knee angle of around 155 degrees and a forward-leaning 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.

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