What is the engine displacement of the 2002 GAS GAS SM 400 FSE?

The 2002 GAS GAS SM 400 FSE has an engine displacement of 399.00 ccm (24.35 cubic inches).

How much horsepower does the 2002 GAS GAS SM 400 FSE have?

The 2002 GAS GAS SM 400 FSE produces 47.00 HP (34.3 kW)) @ 9940 RPM of power.

What is the seat height of the 2002 GAS GAS SM 400 FSE?

The 2002 GAS GAS SM 400 FSE has a seat height of 900 mm (35.4 inches) If adjustable, lowest setting..

2002 GAS GAS SM 400 FSE Price, Specs, Review

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Review

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The 2002 GAS GAS SM 400 FSE emerged as a focused contender in the burgeoning supermoto category. This early 2000s model represented GAS GAS's commitment to the street-legal dirt bike concept, building on their off-road heritage. It entered a competitive landscape, directly challenging other European supermoto offerings such as the KTM 400 LC4 Supermoto and the Husqvarna SM 400R, aiming to capture riders seeking agile, street-biased performance with an enduro pedigree.

At the heart of the SM 400 FSE was its 399.00 ccm (24.35 cubic inches) single-cylinder engine. This powerplant produced a respectable 47.00 HP (34.3 kW) at a peak of 9940 RPM, indicating a rev-happy character for its displacement. Torque output measured 43.15 Nm (4.4 kgf-m or 31.8 ft.lbs) arriving at 6570 RPM, suggesting strong mid-range pull for quick acceleration out of corners. Fuel capacity was a modest 9.50 litres (2.51 gallons), typical for a supermotard designed for spirited shorter rides rather than long-distance touring.

As a supermotard, the SM 400 FSE was engineered for aggressive street riding. Its upright stance and wide handlebars provided excellent leverage for flicking the bike through tight turns, while the 900 mm (35.4 inches) seat height (if adjustable, lowest setting) positioned the rider high for optimal visibility and control. The suspension, likely derived from its off-road siblings, would have been tuned for street use, offering a firm yet compliant ride. This setup allowed for precise handling and effective weight transfer, crucial for the supermoto riding style, emphasizing sharp cornering and controlled slides.

The 2002 GAS GAS SM 400 FSE appealed to a niche but passionate audience: riders who appreciated the raw, unadulterated fun of a street-legal dirt bike. It was ideal for those looking for a nimble machine for urban commuting, spirited backroad carving, or even occasional track day antics on kart circuits. Its supermotard category designation underscored its purpose-built nature for agility and responsiveness. For riders seeking a direct, engaging, and unpretentious riding experience, the SM 400 FSE offered a compelling package.

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Pros (Advantages)

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✅ Why buy this bike?

The GAS GAS SM 400 FSE 2002 is known for its powerful and reliable 398cc engine, providing excellent performance for off-road riding.
The bike features top-quality suspension components, such as front Marzocchi forks and a rear Sachs shock, offering a smooth and controlled ride over rough terrain.
With a lightweight frame and agile handling, the SM 400 FSE is maneuverable and responsive, making it ideal for navigating tight trails and corners.
The motorcycle comes equipped with high-performance Brembo brakes, ensuring excellent stopping power and safety in various riding conditions.
Riders appreciate the electric start feature of the SM 400 FSE, which adds convenience and ease of use when starting the bike for off-road adventures.

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Cons (Disadvantages)

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⚠️ Things to consider

Limited aftermarket support for parts and accessories due to the less common brand.
Reliability issues reported by some owners, such as electrical problems and engine issues.
Higher maintenance costs compared to more mainstream brands.
Less comfortable ergonomics for long rides due to the off-road focused design.
Lower resale value compared to well-known Japanese or European brands.

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Alternatives

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⚖️ Comparison & Competition

KTM 450 SX-F: A high-performance motocross bike known for its powerful engine and agile handling, ideal for off-road racing and advanced riders.
Yamaha YZ450F: Another popular motocross bike with a reputation for reliability and excellent suspension, suitable for both amateur and professional riders.
Honda CRF450R: Renowned for its smooth power delivery and precise handling, this motocross bike is a top choice for riders looking for a competitive edge.
Husqvarna FC 450: A well-balanced motocross bike with a focus on handling and stability, making it a great option for riders of all skill levels.
Suzuki RM-Z450: Known for its user-friendly power delivery and comfortable ergonomics, this motocross bike is a versatile choice for riders seeking a blend of performance and comfort

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License Class (EU)

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The GAS GAS SM 400 FSE produces 47 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

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Fuel Economy & Running Costs

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Estimated average for 399cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 9.50 litres (2.51 gallons)

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Insurance Class

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