Naked Motorcycles
1987Suzuki GSX 400 S
19 fields on record
The 1987 Suzuki GSX 400 S is a lightweight naked bike ideal for beginner and intermediate riders seeking an accessible, reliable commuter. Its air-cooled twin-cylinder engine delivers modest 27 horsepower with a top speed of 151 km/h, making it manageable and fuel-efficient. Known for its nimble handling and affordability, it remains a practical entry-level motorcycle.
- Capacity
- 399.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 190.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 27.0 HP (19.9 kW) @ 7800 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It is a low-displacement air-cooled naked bike intended for relaxed commuting and casual street riding rather than outright performance.
- Built for
- The bike has a classic, understated air-cooled twin character with modest power delivery and simple, approachable mechanics.
- Not ideal for
- It is not suited for riders seeking high-speed touring, aggressive track performance, or off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 399.0 ccm
- Power
- 27.0 HP (19.9 kW) @ 7800 RPM
- Engine type
- Parallel Twin, four-stroke
- Power/weight ratio
- 0.1421 HP/kg (wet)
- Bore x stroke
- 67.0 x 56.6 mm
- Compression
- 10.0:1
- Cooling system
- Air
- Valves per cylinder
- 4
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 151.0 km/h (93.8 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.00-18
- Rear tyre
- 3.75-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 1981 | 1983 | 1985 | 1986 | 1987 | 1988 |
|---|---|---|---|---|---|---|
| Capacity | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc |
| Fuel capacity | 15 L | 15 L | 15 L | 15 L | 15 L | 15 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Suzuki GSX 400 S?
The 1987 Suzuki GSX 400 S has a Capacity of 399.0 ccm (24.35 cubic inches).
What engine power does the Suzuki GSX 400 S have?
The 1987 Suzuki GSX 400 S has a Power of 27.0 HP (19.9 kW) @ 7800 RPM.
How many gears does the Suzuki GSX 400 S have?
The 1987 Suzuki GSX 400 S has a Gearbox of 6-speed.
How much does the Suzuki GSX 400 S weigh?
The 1987 Suzuki GSX 400 S has a Wet weight of 190.0 kg (418.9 pounds).
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