Naked Motorcycles
2026KTM 390 Duke
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The 2026 KTM 390 Duke is an agile, lightweight naked bike engineered for beginner to intermediate riders seeking thrilling urban performance and weekend adventures. Its punchy 398cc single-cylinder engine delivers 45 PS with responsive handling courtesy of the WP APEX suspension and steel trellis frame, making it an accessible gateway into spirited motorcycling.
- Capacity
- 398.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 149.0 kg
- Seat height
- 820 mm
- Power
- 44.4 HP (33.0 kW) @ 8500 RPM
What’s new for the 2026 KTM 390 Duke
vs the 2025| Spec | 2025 | 2026 |
|---|---|---|
| Front suspension | WP Suspension | WP APEX 43 |
| Front brakes | Double disc. Brembo. ABS. | Four-piston radial fixed calliper |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily as a nimble city and canyon-carving streetfighter rather than a long-distance or off-road machine.
- Built for
- A punchy, single-cylinder naked bike with sharp handling, strong brakes, and an eager, playful attitude that rewards aggressive riding.
- Not ideal for
- Not the right choice for riders seeking a plush, wind-protected long-haul tourer or a capable off-road adventure companion.
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 usRange and running costs
Worked out in your browser - nothing is sent to usBased on the published US (EPA-style) fuel economy estimate and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 398.7 ccm
- Power
- 44.4 HP (33.0 kW) @ 8500 RPM
- CO2 Emissions
- 95 CO2 g/km
- EPA Certificate No.
- TKTXC.399FOI-006
- EPA Est. Fuel Consumption
- 4.04 L/100km (58.2 US mpg)
- EPA CO Emissions
- 0.4 CO g/km
- Torque
- 39.0 Nm (4.0 kgf-m)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2980 HP/kg (dry)
- Bore x stroke
- 89.0 x 60.0 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 4
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc clutch / mechanically operated
Dimensions & weight
- Wheelbase
- 1357 mm
- Seat height
- 820 mm
- Dry weight
- 149.0 kg
- Wet weight
- 165.0 kg
- Fuel capacity
- 13.40 litres
Chassis & suspension
- Frame
- Steel trellis frame, powder coated
- Front suspension
- WP APEX 43
- Rear suspension
- WP Suspension
- Front wheel travel
- 150 mm
- Rear wheel travel
- 150 mm
Brakes & wheels
- Front brakes
- Four-piston radial fixed calliper
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc. Brembo. ABS.
- Rear brakes diameter
- 240 mm
- ABS
- Yes
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 | 2013 | 2016 | 2020 | 2023 | 2026 |
|---|---|---|---|---|---|
| Capacity | 375 cc | 373 cc | 373 cc | 373 cc | 399 cc |
| Dry weight | — | 139 kg | 139 kg | 139 kg | 149 kg |
| Seat height | 800 mm | 800 mm | 830 mm | 830 mm | 820 mm |
| Fuel capacity | 11 L | 11 L | 13.4 L | 13.4 L | 13.4 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 KTM 390 Duke?
The 2026 KTM 390 Duke has a Capacity of 398.7 ccm (24.33 cubic inches).
What engine power does the KTM 390 Duke have?
The 2026 KTM 390 Duke has a Power of 44.4 HP (33.0 kW) @ 8500 RPM.
How many gears does the KTM 390 Duke have?
The 2026 KTM 390 Duke has a Gearbox of 6-speed.
What is the torque of the KTM 390 Duke?
The 2026 KTM 390 Duke has a Torque of 39.0 Nm (4.0 kgf-m or 28.8 ft.lbs).
How much does the KTM 390 Duke weigh?
The 2026 KTM 390 Duke has a Dry weight of 149.0 kg (328.5 pounds).
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