2025KTM 390 Duke
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The 2025 KTM 390 Duke is a lightweight naked bike designed for entry-level and urban riders seeking accessible performance. Its 399cc single-cylinder engine delivers 44 horsepower with nimble handling thanks to the trellis frame and WP suspension, making it ideal for commuting and spirited street riding with confident braking via Brembo ABS.
- Capacity
- 398.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 149.0 kg
- Seat height
- 820 mm
- Power
- 44.4 HP (33.1 kW) @ 8500 RPM
What’s new for the 2025 KTM 390 Duke
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Power | 45.0 HP (33.0 kW) @ 8500 RPM | 44.4 HP (33.1 kW) @ 8500 RPM |
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 (33.1 kW) @ 8500 RPM
- CO2 Emissions
- 95 CO2 g/km
- EPA Certificate No.
- SKTXC.399FOI-008
- 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
- trellis frame and castaluminium swingarm
- Front suspension
- WP Suspension
- Rear suspension
- WP Suspension
- Front wheel travel
- 150 mm
- Rear wheel travel
- 150 mm
Brakes & wheels
- Front brakes
- Double disc. Brembo. ABS.
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc. Brembo. ABS.
- Rear brakes diameter
- 240 mm
- ABS
- Yes
Other
- Color options
- Black/orange, blue/orange/black
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 | 2013 | 2016 | 2020 | 2023 | 2025 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 375 cc | 373 cc | 373 cc | 373 cc | 399 cc | 399 cc |
| Dry weight | — | 139 kg | 139 kg | 139 kg | 149 kg | 149 kg |
| Seat height | 800 mm | 800 mm | 830 mm | 830 mm | 820 mm | 820 mm |
| Fuel capacity | 11 L | 11 L | 13.4 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.
Safety Recalls
⚠ 1 recall may applyKTM North America, Inc. (KTM) is recalling certain 2024 Husqvarna Vitpilen 401, Husqvarna Svartpilen 401, 2024-2025 390 Duke, 2025 390 SMC R, 390 Enduro R, 390 Adventure X, and 390 Adventure R motorcycles. The engine control software may cause the engine to stall at low rpms, resulting in a loss of power.
Risk: A loss of drive power increases the risk of a crash or injury.
Remedy: KTM and Husqvarna dealers will inspect the motorcycles and update the electronic control unit engine management system (ECU EMS) software, free of charge. Owner notification letters were mailed January 23, 2026. Owners may contact KTM customer service at 1-888-985-6090. The manufacturer's numbers for this recall are KTB2513 & HTB2508.
These recalls cover some 2025 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA or ask a dealer.
Source: NHTSA. View all KTM recalls →
Rider Reviews
Common questions
What is the engine size of the KTM 390 Duke?
The 2025 KTM 390 Duke has a Capacity of 398.7 ccm (24.33 cubic inches).
What engine power does the KTM 390 Duke have?
The 2025 KTM 390 Duke has a Power of 44.4 HP (33.1 kW) @ 8500 RPM.
How many gears does the KTM 390 Duke have?
The 2025 KTM 390 Duke has a Gearbox of 6-speed.
What is the torque of the KTM 390 Duke?
The 2025 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 2025 KTM 390 Duke has a Dry weight of 149.0 kg (328.5 pounds).
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