Overview
The 2025 KTM 790 Duke is a naked bike with a 799 cc parallel-twin engine. It produces 103 hp (77 kW) and 87 Nm, and weighs 187.7 kg (wet weight). Its seat height is 825 mm and its fuel tank holds 14 L. The chromium-molybdenum steel frame uses the engine as a stressed element, while the mechanically operated PASC antihopping clutch is paired with a 6-speed gearbox and an optional quickshifter. Bosch cornering ABS includes a disengageable supermoto mode, and the front brakes use radially mounted calipers. Compared with the BMW F 900 R, the Duke is 20.3 kg lighter.
Specifications
Engine
Engine
- Bore x stroke
- 88 mm x 65.7 mm
- Engine capacity
- 799 cm³
- Compression ratio
- 12.7:1
- Cooling system
- Liquid cooled with water/oil heat exchanger
- Cylinders
- 2
- Engine type
- Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder
- Fuel system
- DKK DellOrto fuel injection with 42mm throttle body
- Ignition
- Bosch EMS with RBW
- Lubrication system
- Forced oil lubrication with 2 oil pumps
- Starting
- Electric
- Valves per cylinder
- 4
Performance and transmission
Performance and transmission
- Emission details
- EURO 5
- Power
- 103 hp (77 kW) at 9,000 rpm
- Torque
- 87 Nm
- Chain size
- 520
- Clutch
- PASC antihopping clutch, mechanically operated
- Final drive
- Chain
- Gearbox
- 6-speed (quickshifter optional)
- Primary drive
- 39:75
Dimensions and weight
Dimensions and weight
- Fuel capacity
- 14 L
- Ground clearance
- 186 mm
- Overall height
- 1,059 mm
- Overall length
- 2,062 mm
- Overall width
- 904 mm
- Seat height
- 835.6 mm
- Wet weight
- 187.7 kg
- Wheelbase
- 1,475 mm
Chassis and suspension
Chassis and suspension
- Fork tube size
- 43 mm
- Frame
- Chromium-Molybdenum-Steel frame using the engine as stressed element, powder coated
- Front suspension
- 43mm Non-adjustable inverted WP APEX fork
- Front wheel travel
- 140 mm
- Rake
- 24 °
- Rear suspension
- Linkage-free, cantilevered spring-preload adjustable WP Apex shock
- Rear wheel travel
- 150 mm
- Trail
- 99 mm
Brakes and wheels
Brakes and wheels
- Abs
- Bosch 9.1 MP (incl. Cornering-ABS and super moto mode, disengageable)
- Front brakes
- 2x 300mm discs, radially mounted 4 piston caliper
- Front brakes diameter
- 300 mm
- Front tyre
- 120/70 x 17
- Front wheel
- 3.50 x 17 in
- Rear brakes
- Single 240mm disc, 2 piston floating caliper
- Rear brakes diameter
- 240 mm
- Rear tyre
- 180/55 x 17
- Rear wheel
- 5.50 x 17 in
- Wheels
- Cast aluminium
Last updated:
Model years
2022
Power: 105 hp (78 kW) → 103 hp (77 kW)
2023
Seat height: 825 mm → 835.6 mm
2025
Seat height: 835.6 mm → 825 mm
| Specification | ||||
|---|---|---|---|---|
| Engine capacity | 799 cm³ | 799 cm³ | 799 cm³ | 799 cm³ |
| Power | 105 hp (78 kW) | 103 hp (77 kW) | 103 hp (77 kW) | 103 hp (77 kW) |
| Torque | 87 Nm | 87 Nm | 87 Nm | 87 Nm |
| Dry weight | 169 kg | 169 kg | 187.7 kg | 187.7 kg |
| Seat height | 825 mm | 825 mm | 835.6 mm | 825 mm |
| Fuel capacity | 14 L | 14 L | 14 L | 14 L |
Pros and cons
Advantages
Lighter than the class median
At 187.7 kg wet, it is 14.3 kg lighter than the naked bike median of 202 kg in our catalogue.
Power above the class median
Its 103 hp compares with a naked bike median of 74 hp in our catalogue.
Things to consider
Taller seat than the class median
The 825 mm seat is 25 mm above 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
836 mm
Approx. loaded height
806 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 14 L at 5.5 L/100 km
Lower consumption = longer range.
Estimated range
255 km
With 10% reserve
229 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 weight of KTM 790 Duke?
The KTM 790 Duke weighs 187.7 kg (wet weight). For model year 2023.
What are the specs of KTM 790 Duke?
The KTM 790 Duke has the following key specifications (specs) for model year 2023: 799 cc; 103 hp (77 kW); 87 Nm; 187.7 kg (wet weight); seat height 835.6 mm; fuel tank 14 L. Specification table
How much horsepower does KTM 790 Duke have?
The KTM 790 Duke makes 103 hp (77 kW) at 9,000 rpm, with a torque of 87 Nm. For model year 2023.
What is the seat height of KTM 790 Duke?
The KTM 790 Duke has a seat height of 835.6 mm. For model year 2023.
What is the fuel tank capacity of KTM 790 Duke?
The KTM 790 Duke has a fuel tank capacity of 14 L. For model year 2023.
Does the KTM 790 Duke meet the numerical A2 limits?
The KTM 790 Duke does not meet the numerical A2 limits at full power: 77.0 kW, 0.41 kW/kg. This does not confirm licence eligibility for every version and market. For model year 2023.
