Overview
The 2021 KTM 390 Duke is a naked bike with a 373 cc single-cylinder engine, listed at 43 hp (32 kW) and 159 kg (wet weight). It has an 830 mm seat and a 13.4 L fuel tank. Its steel trellis frame is paired with a hydraulically actuated wet multi-disc clutch and Bosch 9.1MP two-channel ABS with a Supermoto ABS mode. The front brake uses a single 320 mm disc with a four-piston radial fixed caliper. The newer-generation KTM 390 Duke (2024) has a 398.7 cc engine and 44 hp; compared with the Triumph Scrambler 400 X, this model is 20 kg lighter.
Specifications
Engine
Engine
- Bore
- 89 mm
- Bore x stroke
- 89 x 60 mm
- Engine capacity
- 373 cm³
- Compression ratio
- 12.6:1
- Cooling system
- Liquid Cooled
- Cylinders
- 1
- Engine type
- Four stroke, single cylinder. DOHC with finger followers, 4 valves
- Fuel system
- Bosch Injection
- Ignition
- Bosch EMS
- Lubrication system
- Wet sump
- Starting
- Electric
- Stroke
- 60 mm
- Valves per cylinder
- 4
Performance and transmission
Performance and transmission
- Torque
- 3.6 Nm
- Top speed
- 167 km/h (104 mph) · approx.
- Clutch
- PASC™ antihopping clutch, mechanically operated
- Final drive
- Chain
- Gearbox
- Manual 6-speed
- Primary drive
- 30:80
Dimensions and weight
Dimensions and weight
- Dry weight
- 149 kg
- Fuel capacity
- 13.4 L
- Ground clearance
- 185 mm
- Seat height
- 830 mm
- Wet weight
- 159 kg
- Wheelbase
- 1,357 mm
Chassis and suspension
Chassis and suspension
- Fork tube size
- 43 mm
- Frame
- Steel trellis frame, powder coated
- Front suspension
- WP inverted fork Ø 43 mm
- Front wheel travel
- 142 mm
- Rear suspension
- WP monoshock
- Rear wheel travel
- 150 mm
Brakes and wheels
Brakes and wheels
- Abs
- Bosch 9MB two-channel ABS
- Front brakes
- Single 320 mm disc, 4 piston radial caliper
- Front brakes diameter
- 320 mm
- Front tyre
- 110/70 -17
- Rear brakes
- Single 230 mm disc 1 piston caliper
- Rear brakes diameter
- 230 mm
- Rear tyre
- 150/60-17
Last updated:
Model years
No recorded specification changes between model years.
| Specification | |||||
|---|---|---|---|---|---|
| Engine capacity | 373 cm³ | 373 cm³ | 373 cm³ | 373 cm³ | 373 cm³ |
| Power | — | — | — | — | 43 hp (32 kW) |
| Torque | 3.6 Nm | 3.6 Nm | 3.6 Nm | 3.6 Nm | — |
| Wet weight | 159 kg | 159 kg | 159 kg | 159 kg | 159 kg |
| Seat height | 830 mm | 830 mm | 830 mm | 830 mm | 830 mm |
| Fuel capacity | 13.4 L | 13.4 L | 13.4 L | 13.4 L | 13.4 L |
| Top speed | 167 km/h (104 mph) · approx. | 167 km/h (104 mph) · approx. | 167 km/h (104 mph) · approx. | 167 km/h (104 mph) · approx. | 167 km/h (104 mph) · approx. |
Pros and cons
Advantages
Lighter than the class median
At 159 kg wet, it is 43 kg lighter than the naked bike median of 202 kg in our catalogue.
Things to consider
Seat above the class median
Its 830 mm seat is 30 mm taller than the naked bike median of 800 mm in our catalogue.
Rider fit
Rider fit calculator
Calculated in your browser
Don't know it? Leave this empty and we'll estimate it from your height.
Estimated from your height: 79 cm
How to measure
Stand barefoot with your back to a wall. Hold a book firmly between your legs, then measure from the floor to the top edge of the book.
Estimated ground reach
Balls of both feet likely down
You should reach on both sides, but probably not with your heels fully down.
Seat height
830 mm
Approx. loaded height
800 mm
Estimate assumes about 30 mm of suspension sag. Seat width, footwear, luggage and suspension settings can change real reach. Always sit on the motorcycle before buying.
Fuel range calculator
Enter your expected fuel consumption to estimate the distance on a full tank, with or without a fuel reserve.
Tank 13.4 L at 5.5 L/100 km
Lower consumption = longer range.
Estimated range
244 km
With 10% reserve
219 km
This is a planning estimate, not a measured result. Speed, route, weather, load and riding style can change real consumption.
FAQ
What is the top speed of KTM 390 Duke (2017–2021)?
The KTM 390 Duke (2017–2021) has a top speed of approximately 167 km/h (104 mph), an estimate rather than a manufacturer figure. For model year 2020.
What is the weight of KTM 390 Duke (2017–2021)?
The KTM 390 Duke (2017–2021) weighs 159 kg (wet weight) and 149 kg (dry weight). For model year 2020.
What are the specs of KTM 390 Duke (2017–2021)?
The KTM 390 Duke (2017–2021) has the following key specifications (specs) for model year 2020: 373 cc; 3.6 Nm; 159 kg (wet weight); seat height 830 mm; fuel tank 13.4 L. Specification table
What is the seat height of KTM 390 Duke (2017–2021)?
The KTM 390 Duke (2017–2021) has a seat height of 830 mm. For model year 2020.
What is the fuel tank capacity of KTM 390 Duke (2017–2021)?
The KTM 390 Duke (2017–2021) has a fuel tank capacity of 13.4 L. For model year 2020.
