Supermotos
1998KTM 620 Duke
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The 1998 KTM 620 Duke is a lightweight supermoto designed for agile, street-focused riders who value maneuverability and fun over raw power. Its 609cc single-cylinder engine delivers predictable mid-range torque ideal for urban riding and weekend backroad exploring. Known for its nimble handling and accessible performance, it suits intermediate riders seeking an engaging, accessible platform.
- Capacity
- 609.0 ccm
- Engine
- Single
- Gearbox
- 5-speed
- Dry weight
- 149.0 kg
- Seat height
- 860 mm
- Power
- 50.0 HP (36.8 kW)
What’s new for the 1998 KTM 620 Duke
vs the 1997| Spec | 1997 | 1998 |
|---|---|---|
| Torque | — | 53.0 Nm (5.4 kgf-m or 39.1 ft.lbs) |
| Top speed | 170.0 km/h (105.6 mph) | 165.0 km/h (102.5 mph) |
| Seat height | 880 mm (34.6 inches) | 860 mm (33.9 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for supermoto thrills, tight city streets, and flicking through corners rather than covering long distances.
- Built for
- A raw, punchy single-cylinder brawler that rewards aggressive, playful riding with immediate throttle feedback and razor-sharp handling.
- Not ideal for
- Not a good fit for riders seeking plush comfort, wind protection, or a smooth machine for long highway journeys or two-up 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 usEngine
- Capacity
- 609.0 ccm
- Power
- 50.0 HP (36.8 kW)
- Torque
- 53.0 Nm (5.4 kgf-m)
- Engine type
- Single
- Power/weight ratio
- 0.3356 HP/kg (dry)
- Cooling system
- Liquid
- Valves per cylinder
- 4
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 165.0 km/h (102.5 mph)
Dimensions & weight
- Seat height
- 860 mm
- Dry weight
- 149.0 kg
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Single disc
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 | 1997 | 1998 |
|---|---|---|
| Capacity | 609 cc | 609 cc |
| Dry weight | 149 kg | 149 kg |
| Seat height | 880 mm | 860 mm |
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 KTM 620 Duke?
The 1998 KTM 620 Duke has a Capacity of 609.0 ccm (37.16 cubic inches).
What engine power does the KTM 620 Duke have?
The 1998 KTM 620 Duke has a Power of 50.0 HP (36.8 kW).
How many gears does the KTM 620 Duke have?
The 1998 KTM 620 Duke has a Gearbox of 5-speed.
What is the torque of the KTM 620 Duke?
The 1998 KTM 620 Duke has a Torque of 53.0 Nm (5.4 kgf-m or 39.1 ft.lbs).
How much does the KTM 620 Duke weigh?
The 1998 KTM 620 Duke has a Dry weight of 149.0 kg (328.5 pounds).
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