Sportbikes
1981Suzuki GS 650 G Katana
19 fields on record
The 1981 Suzuki GS 650 G Katana is a middleweight sport bike designed for riders seeking responsive performance and nimble handling. Its 674cc inline-four engine delivers 73 horsepower and reaches 197 km/h, providing genuine sportiness with practical everyday usability. The bike is best known for its distinctive angular Katana styling and accessible power delivery that appeals to experienced riders wanting sport-oriented excitement.
- Capacity
- 674.0 ccm
- Engine
- In-line four, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 239.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 73.0 HP (53.7 kW) @ 9500 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's best suited to spirited road riding and moderate-distance touring, blending Katana styling with air-cooled four-cylinder performance rather than outright track ambition.
- Built for
- It has the character of a classic early-80s sport-standard: a torquey, air-cooled DOHC four delivering smooth, linear power with a distinctive shaft-drive feel and iconic angular Katana styling.
- Not ideal for
- It's not ideal for riders seeking modern lightweight agility, off-road capability, or cutting-edge sport-bike cornering performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 674.0 ccm
- Power
- 73.0 HP (53.7 kW) @ 9500 RPM
- Engine type
- In-line four, four-stroke
- Power/weight ratio
- 0.3054 HP/kg (wet)
- Bore x stroke
- 62.0 x 55.8 mm
- Compression
- 9.4:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Shaft
Performance
- Top speed
- 197.0 km/h (122.4 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Single disc
- Front tyre
- 3.25-19
- Rear tyre
- 4.25-17
Specs last verified against published sources: .
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 | 1982 | 1983 |
|---|---|---|---|
| Capacity | 674 cc | 674 cc | 674 cc |
| Fuel capacity | 23 L | 23 L | 23 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 GS 650 G Katana?
The 1981 Suzuki GS 650 G Katana has a Capacity of 674.0 ccm (41.13 cubic inches).
What engine power does the Suzuki GS 650 G Katana have?
The 1981 Suzuki GS 650 G Katana has a Power of 73.0 HP (53.7 kW) @ 9500 RPM.
How many gears does the Suzuki GS 650 G Katana have?
The 1981 Suzuki GS 650 G Katana has a Gearbox of 5-speed.
How much does the Suzuki GS 650 G Katana weigh?
The 1981 Suzuki GS 650 G Katana has a Wet weight of 239.0 kg (526.9 pounds).
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