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2013 KTM 390 Duke Overview
For 2013, KTM offers the 390 Duke as a sport motorcycle with 373.4 cc on tap. The 2013 KTM 390 Duke is built around a Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder engine, a compression ratio of 12.8:1. Out on the road, the 390 Duke delivers 32 kW @ 9500 rpm of peak power and 35.3 Nm of torque. In everyday use, the 2013 390 Duke tips the scales at 139 kg, carries an 11 L fuel tank, offers a seat height of 800 mm and spans a 1367 mm wheelbase. Every technical detail, from suspension travel to tyre sizes, is covered in the full 2013 KTM 390 Duke spec sheet below.
2013 KTM 390 Duke compared with other bikes in the Sport category
Measured against other bikes in the Sport category in our database (up to 2003 models, one entry per model), the 2013 KTM 390 Duke comes out as follows.
- With 32 kW, the 390 Duke has the joint 284th lowest power output of 1341 bikes in the Sport category, 57% below the category average of 75.2 kW.
- Torque of 35.3 Nm is lower than that of 1216 of the other 1572 bikes in the Sport category.
- Only 499 of the other 2002 bikes in the Sport category have a smaller engine displacement than the 373 cc of the 390 Duke.
- Narrowing the field to the 394 models within five model years of it, the power output of 32 kW is lower than that of 296 of the other 393.
2013 390 Duke - Pros & Cons
Strengths
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⚡
Strong power output: Peak output on the 390 Duke is 32 kW @ 9500 rpm and 35.3 Nm of torque - strong numbers for what it is.
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🔧
Fuel injection: No choke, no jetting, no altitude compensation to think about - fuel injection just works across a wider range of conditions than carburetion.
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🛑
Strong front braking: The disc front brake bites hard and stays consistent - a solid foundation whether it's stock or upgraded with braided lines.
Considerations
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⛽
Modest fuel capacity: An 11 L tank keeps things light but means budgeting for more frequent fuel stops on any longer ride.
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⚙️
Chain final drive upkeep: A chain drivetrain is the most common setup in its class, but it's also the one that demands the most regular hands-on maintenance.
Wear Points & Servicing Notes
Cooling system servicing
With Liquid Cooled, thermal management is largely automatic, but the coolant has a service life of its own - replace it on the manufacturer's interval to protect the water passages and thermostat.
Fuelling & injector care
Fuelling on the 390 Duke comes from Bosch electronically controlled injection. Cold starts and throttle response stay consistent across altitude and temperature, the main practical edge over a carbureted equivalent.
Brake disc and pad wear
Single 300 mm disc, 4 piston radial caliper up front provides the primary stopping power; inspect disc thickness and pad wear at each tyre change to catch scoring before it becomes a rotor replacement.
Suspension condition on used examples
Suspension duties are handled by WP inverted fork ø 43 mm up front and WP monoshock at the rear. Weeping fork seals aren't a dealbreaker on a used bike, but they're a fair basis for negotiating price.
Final drive maintenance
Chain final drive on the 390 Duke means routine lubing and tension checks are part of ownership - skip them and sprocket wear accelerates noticeably.
Frame & chassis check
The Steel trellis chassis holds up well with normal use; on a used bike it's still worth checking the head-stock and swingarm pivot area for impact damage or corrosion.
Low-speed handling
The 390 Duke's 139 kg kerb weight makes low-speed control noticeably less effort than on a heavier machine.
390 Duke - Buying & Maintenance Guide
What to check before buying
A pre-purchase check on the 2013 KTM 390 Duke with its 373.4 cc sport should cover the same ground every time: service history, drivetrain condition, and any oil seepage around the casings. This model runs chain final drive, so check chain slack and sprocket tooth profile specifically - a worn sprocket is a cheaper fix now than after it's chewed up the next chain. Now 13 years old, this sport is as likely to show age-related wear (perished rubber, seized fasteners, degraded seals) as mileage-related wear. Start it from cold if you can - a well-kept 390 Duke settles to a smooth idle within seconds.
Oil and filter changes
Oil changes are the cheapest insurance you can buy for the 390 Duke's 373.4 cc four stroke, single cylinder, dohc with finger followers, 4 valves per cylinder - keep to the manufacturer's interval rather than stretching it. With a 12.8:1 compression ratio, running the octane grade specified in the manual matters more than on a lower-compression engine. Use the viscosity grade the manual specifies, not whatever's on sale.
Fuel system care
Injector systems like the 390 Duke's hold up well with basic care - decent fuel, an occasional cleaner additive, and draining old fuel before any layup longer than three months.
2013 KTM 390 Duke - Frequently Asked Questions
What engine does the 2013 KTM 390 Duke have?
The 2013 KTM 390 Duke uses a Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder engine with 373.4 cc of displacement. It is liquid cooled.
How much does the 2013 KTM 390 Duke weigh?
The 2013 KTM 390 Duke weighs 139 kg. This is the manufacturer's dry figure.
How much power does the 2013 KTM 390 Duke make?
The 2013 KTM 390 Duke produces 32 kW @ 9500 rpm of power and 35.3 Nm of torque. These are peak figures.
What is the fuel tank capacity of the 2013 KTM 390 Duke?
The 2013 KTM 390 Duke has an 11 L fuel tank. At around 5-6 litres per 100 km, that is roughly 183-220 km between stops.
Is the 2013 KTM 390 Duke suitable for shorter riders?
The 2013 KTM 390 Duke has a seat height of 800 mm. This is a moderate seat height that suits a wide range of rider heights.
What brakes does the 2013 KTM 390 Duke have?
The 2013 KTM 390 Duke uses single 300 mm disc, 4 piston radial caliper at the front and single 230 mm disc, 1 piston floating caliper at the rear.
What tyre sizes does the 2013 KTM 390 Duke use?
The 2013 KTM 390 Duke runs 110/70 - ZR17 M/C 54W TL, Metzeler SPORTEC MS front and 150/70 - ZR17 M/C 66W TL, Metzeler SPORTEC MS rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2013 KTM 390 Duke have?
The 2013 KTM 390 Duke is fitted with a 6 Speed, claw shifted transmission.
KTM 390 Duke Spec Evolution
The KTM 390 Duke was produced across 6 model years (2014-2024). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2014 |
2016 |
2018 |
2020 |
2021 |
2024 |
| Max Power |
32 kW / 43.5 hp @ 9500 rpm |
32 kW / 43.5 hp @ 9500 rpm |
43.5 hp / 32 kW @ 9500 rpm |
43.5 hp / 32 kW @ 9500 rpm |
43.5 hp / 32 kW @ 9500 rpm |
33 kW / 44.3 hp @ 8500 rpm |
| Dry Weight |
139 kg / 306 lbs |
139 kg / 306 lbs |
149 kg / 328 lbs |
149 kg / 328 lbs |
149 kg / 328 lbs |
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| Engine Detail |
Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder |
Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder |
Four stroke, single cylinder. DOHC with finger followers, 4 valves |
Four stroke, single cylinder. DOHC with finger followers, 4 valves |
Four stroke, single cylinder, DOHC with finger followers, 4 valves |
Four stroke, single cylinder, DOHC with finger followers, 4 valves |
| Seat Height |
800 mm / 31.4 in |
800 mm / 31.4 in |
830 mm / 32.7 in |
830 mm / 32.7 in |
830 mm / 32.7 in |
- |
| Fuel Capacity |
11 L / 2.9 US gal / 2.4 Imp gal |
11 L / 2.9 US gal / 2.4 Imp gal |
13.4 L / 3.5 US gal / 2.9 Imp gal |
13.4 L / 3.5 US gal / 2.9 Imp gal |
13.4 Litres / 3.5 US gal |
15 L / 4.0 US gal |
| Frame Type |
Steel trellis |
Steel trellis |
Steel trellis frame, powder coated |
Steel trellis frame, powder coated |
Steel trellis frame, powder coated |
Steel trellis frame, powder coated |
| Displacement |
373.4 cc / 22.7 cu-in |
373.4 cc / 22.7 cu-in |
373 cc / 22.7 cu-in |
373 cc / 22.7 cu-in |
373 cc / 22.7 cu-in |
398.7 cc / 24.3 cu-in |
| Wheelbase |
1367 mm / 53.8 in |
1367 mm / 53.8 in |
1357 mm / 53.4 in |
1357 mm / 53.4 in |
1357 mm / 53.4 in |
1357 mm / 53.4 in |
Key Specifications
Engine
Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder
Power
32 kW / 43.5 hp @ 9500 rpm
Torque
35.3 Nm / 3.6 kg-m / 26 ft-lb @7000rpm
Fuel Capacity
11 L / 2.9 US gal / 2.4 Imp gal
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Full 2013 KTM 390 Duke Specifications
Year
2013 - 14
Make Model
KTM 390 Duke
Seat Height
800 mm / 31.4 in
Wheelbase
1367 mm / 53.8 in
Ground Clearance
172 mm / 6.8 in
Dry Weight
139 kg / 306 lbs
Fuel Capacity
11 L / 2.9 US gal / 2.4 Imp gal
Maximum Load / GVWR
335 kg / 739 lbs
Oil Capacity
1.6 L / 1.7 US qt / 1.4 Imp qt, SAE 15W/50
Displacement
373.4 cc / 22.7 cu-in
Engine Detail
Four stroke, single cylinder, DOHC with finger followers, 4 valves per cylinder
Bore x Stroke
89 x 60 mm
Compression Ratio
12.8:1
Cooling System
Liquid Cooled
Fuel Induction
Bosch electronically controlled injection
Fuel Reserve
1.5 L / 1.6 US qt / 1.3 Imp qt
Ignition
Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
Lubrication
Forced oil lubrication with 2 Eaton pumps
Spark Plug
Bosch VR 5 NE
Starter
Electric
Battery Capacity
FTZ-9, 12V 8Ah, maintenance free
Clutch
Wet multi-disc clutch, Brembo hydraulics
Final Drive
Chain 5/8 x 1/4" X Ring
Final Drive Ratio
15:45
Gear Ratios
1st 12:32 / 2nd 14:26 / 3rd 19:27 / 4th 21:24 / t5th 23:22 / 6th 25:21
Primary Drive Ratios
30:80
Transmission / Drive
6 Speed, claw shifted
Frame Type
Steel trellis
Suspension - Front
WP inverted fork ø 43 mm
Suspension - Rear
WP monoshock
Steering Head Angle
65°
Trail
100 mm / 3.8 in
Wheel Travel - Front
150 mm / 5.9 in
Wheel Travel - Rear
150 mm / 5.9 in
Brakes - Front
Single 300 mm disc, 4 piston radial caliper
Brakes - Rear
Single 230 mm disc, 1 piston floating caliper
Tyres - Front
110/70 - ZR17 M/C 54W TL, Metzeler SPORTEC MS
Tyres - Rear
150/70 - ZR17 M/C 66W TL, Metzeler SPORTEC MS
Specifications are compiled from manufacturer documentation and cross-referenced
technical sources, and corrected on an ongoing basis.
Spot an error? Let us know.
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