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Supermotos

2002GAS GAS SM 400 FSE

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The 2002 GAS GAS SM 400 FSE is a lightweight supermoto designed for agile, technical riders who value maneuverability and fun over raw power. Its 399cc single-cylinder engine delivers 47 horsepower with excellent low-end torque, making it ideal for urban riding and tight trail work. Known for its flickable handling and compact dimensions, this bike excels in mixed-terrain environments where versatility matters most.

Capacity
399.0 ccm
Engine
Single
Gearbox
6-speed
Dry weight
Not on record
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Seat height
900 mm
Power
47.0 HP (34.6 kW)
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How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 55Agility 92Comfort 40Off-road 20Touring 25Road manners 78
Off-road & trail20%
Cornering95%
City riding70%
Daily riding45%
Touring20%
Two-up25%
Track80%
Best for
Built for supermoto-style thrills: flicking through tight corners, wheelies, and aggressive street or track riding rather than long-distance travel.
Built for
A raw, minimalist, adrenaline-focused machine with sharp handling, direct feedback, and a single-cylinder engine character that rewards aggressive, playful riding.
Not ideal for
Not a good fit for riders wanting plush comfort, passenger-friendly ergonomics, or a machine suited to long highway touring.

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 us
At 900mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2002 GAS GAS SM 400 FSE, with a relaxed knee angle of around 145 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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Full specifications

Engine
Capacity
399.0 ccm
Power
47.0 HP (34.6 kW)
Torque
43.2 Nm (4.4 kgf-m)
Engine type
Single
Bore x stroke
90.0 x 62.6 mm
Cooling system
Liquid
Fuel system
Carburettor
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Dimensions & weight
Wheelbase
1475 mm
Seat height
900 mm
Fuel capacity
9.50 litres
Ground clearance
290 mm
Dry weight
Not on record - add it
Chassis & suspension
Front wheel travel
295 mm
Rear wheel travel
320 mm
Brakes & wheels
Front brakes
Single disc
Front brakes diameter
310 mm
Rear brakes
Single disc
Rear brakes diameter
220 mm
Front tyre
120/60-17
Rear tyre
150/60-17

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

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Common questions

What is the engine size of the GAS GAS SM 400 FSE?

The 2002 GAS GAS SM 400 FSE has a Capacity of 399.0 ccm (24.35 cubic inches).

What engine power does the GAS GAS SM 400 FSE have?

The 2002 GAS GAS SM 400 FSE has a Power of 47.0 HP (34.6 kW).

How many gears does the GAS GAS SM 400 FSE have?

The 2002 GAS GAS SM 400 FSE has a Gearbox of 6-speed.

What is the torque of the GAS GAS SM 400 FSE?

The 2002 GAS GAS SM 400 FSE has a Torque of 43.2 Nm (4.4 kgf-m or 31.9 ft.lbs).

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