presentation of the 390 Duke 2021
The 390 Duke is certainly one of the most attractive roadsters in its class. with the 2021 model year imposing certain adjustments, Katoche is taking the opportunity to give the beast a little bit of a facelift. Some of the alterations are identical to those on the 125: a larger cartridge in the middle of the exhaust line, E5 engine compatibility, new colors, a mini-revamp of the engine cowling and a weight increase - in this case one kilo. As a sporty bonus, the 390 can now be fitted with the optional Quickshifter+.
Once you've whetted your appetite for two-wheelers with the 125, the 390 Duke is there to turn the tables and introduce motorcyclists to the joys of an intermediate displacement. For this second edition, the roadster's arguments are on the rise. KTM insists on cultivating a family identity, except that this time, the Duke has brought out the big fangs.
With the first line of small Dukes(125, 200 and 390), Mattighofen offered them the vision of the 690. In other words, the roadster that took the single-cylinder motorization to an excellent fun/sport/performance level. But now, the new generation is aiming higher, meaner and bolder. And what's more violent than Katoche?! The 1290 Superduke R. THE sick machine, with a twin that uproots molars.
So, like the 125, the 390 Duke has opted for a design closely modelled on the big Superduke. The result is a real success story. With its visible spine, incisive face and taut lines, the bike's design constantly oscillates between the toughness of a Superduke and the playfulness of a toy. But make no mistake. The desire to have fun, of course, but in the manner of a little buccaneer.

True to its mono design, KTM has made only minor alterations to its engine. The result is a little more flexibility and lower emissions, in line with the latest standards. It doesn't lose any power, peaking at 44 hp, but 500 rpm earlier, at 9,000 rpm. As a bonus, a pinch of torque was added, 2 Nm.
More pleasing, more rewarding, more ardent, the medium-sized Duke has even more assets, which high-tech enthusiasts will not fail to point out. These include a ride-by-wire electronic throttle, LED lights, a color TFT display with optional minimalist smartphone management via Bluetooth, and a Supermoto mode in the ABS. When activated, this keeps the ABS on the front but leaves the rear brake free. Once you've got the hang of it, you'll be able to enjoy a few slips and tricks. The entire ABS system can be deactivated at will. Leaving aside the sensors and electrical thinking, braking has improved with a 20 mm larger disc (now 320 mm), still clamped by a Bybre radial caliper.
KTM had also thought about suspension, with a new fork, still inverted with a diameter of 43 mm, but lighter and more efficient. As for the frame, there are no changes to report. The tubular trellis provides the satisfaction and versatility required. Let's not forget the addition of adjustable levers, an anti-dribble clutch and new saddles offering a little more space. For the passenger, however, the welcome remains on the verge of courtesy.
A very successful redesign for the KTM 390 Duke. The previous model had already attracted more than a few curious onlookers to the A2 class, but this one is in full seduction mode. The days of the 250/300 are over, and we're witnessing the rise of the 400. Is this enough to trigger a boom in the sector? Maybe not, but it's sure to give you a real buzz.
M.B - Manufacturer's photos
Key facts KTM 390 Duke (2021) : What you need to know before you buy
Highlights
- Superduke design
- A2 fashion
Weak points
- Gained a little weight
- Higher saddle
Prices
| Basic version | |
|---|---|
|
6,140€
|
Performance
- Max speed : approximately 160 km/h (99.40 mph)
- Average fuel consumption : 3.46 liters/100km (0.68 mpg)
-
Estimated range
: 376 km (234 miles)
Calculated range until tank is empty, not verified.
Specifications KTM 390 Duke 2021
- Chassis
- Frame : tubular steel trellis frame
- Fuel capacity : 13 liters (3.43 US gallons)
- Seat height : 830 mm (32.68 in)
- Length : 2,072 mm (81.57 in)
- Width : 831 mm (32.72 in)
- Min height : 1,109 mm (43.66 in)
- Wheelbase : 1,357 mm (53.43 in)
- Dry weight : 150 kg (331 lb)
- Front axle
- Telehydraulic inverted WP forks Ø 43 mm, Wheel travel : 142 mm (5.59 in)
- Braking 1 disc Ø 320 mm (12.6 in), radial mounting, 4-piston caliper
- Front tire : 110 / 70 - 17 → Order this type of tire
- Pressure : 2 bar
- Transmission
- 6 stage gearbox , manual - optional shifter
- Secondary by chain
- Rear axle
- WP monoshock, Wheel travel : 150 mm (5.91 in)
- Braking 1 disc Ø 230 mm (9.06 in), single-piston caliper
- Rear tire : 150 / 60 - 17 → Order this type of tire
- Pressure : 2 bar
- Motor
- single-cylinder , 4 strokes
- Injection Ø 46 mm
- Cooling system : liquid
- 2 ACT
- 4 valves
- 375 cc
- 44 ch (43.40 hp) to 9,500 rpm
- 3.90 mkg to 7,250 rpm
- Power-to-weight ratio : 3.46 kg/ch
- Weight / torque ratio : 38.46 kg/mkg
- Compression : 12.6 : 1
- CO² emissions: 81 g/km
- Standard equipment
- Brake assist : A.B.S desconectable
- Bluetooth
- Practical information
Used
Compare the 390 Duke to its competitors
Fuel consumption
Range
Torque
Power
Power-to-Weight ratio
Torque-to-Weight ratio
Speed
CO² emissions
FAQ Your frequently asked questions about the 390 Duke 2021
- What is the power of the 390 Duke 2021?
-
The 390 Duke 2021 develops a power of 44 ch (43.40 hp)
- What is the torque of the 390 Duke 2021?
-
The maximum torque of the 390 Duke 2021 is 3.90 mkg to 7,250 rpm.
- What is the maximum speed of the 390 Duke 2021?
-
The 390 Duke 2021 is capable of reaching a top speed of approximately 160 km/h (99.40 mph) on the track.
- What is the weight of the 390 Duke 2021?
-
The 390 Duke 2021 has a a dry weight of 150 kg (331 lb).
- What is the fuel consumption of the 390 Duke 2021?
-
Average fuel consumption is estimated at 3.46 l/100km (0.68 mpg) according to the WMTC cycle.
- QWhat is the seat height of the 390 Duke 2021?
-
To ensure good accessibility, the 390 Duke 2021 offers a minimum seat height of 830 mm (32.68 in).
- What is the price of the 390 Duke 2021?
-
The price of the 390 Duke 2021 is 6,140€ in France
News
-
New motorcycle products for 2026
-
Bridgestone announces the RS12, its new road-race weapon.
-
Yamaha Race Like A Girl: Natalia Rivera in episode 5.
-
Bridgestone presents the Battlax V03, its new slick tire.
-
With Sartoria Meccanica, MV-Agusta aims to go beyond premium.
-
Upgrading the entire Bonneville family for 2026.
-
Metzeler unveils three new tires at EICMA.
-
World Superbike celebrates 70 years of Yamaha.
-
Exceptional: some thirty new Triumphs in 2026.
-
40.000 bikers for the Royal-Enfield "One Ride" 2025.






Bikers' reviews Leave a review - 6 reviews
Left fork spinnaker seal dead at 2,000km! (it can happen) and the two original ContiMotion changed around 4,000 (at the wear indicator), for the rear I'm blasé, 2016-2021 same fight, the bug eats rubber!... for the front I was used to making the double last but well, this 2021 brakes very hard, I'm not going to spit in the soup!
For those who knew the 2013-2016 model, this new version is still fun, very fun, but more "civilized" because of the standards, the engine character has mellowed quite a bit, despite 10kg more, it's still one of the most playful bikes and has no real rivals in the A2 category because it's unbridled, to get some pep I strongly recommend a 14-tooth gearbox output sprocket, it's true that you don't go as fast at the top, but what does that matter?..
As for petrol consumption, it's around 4L/100 if you're respectful (mechanically and otherwise) in a straight line. With a 13.5L fuel tank, you can be sure of a 220km range
If I'm ready to take one back? of course, but before the warranty expires! Rating : 4/5 Respond to jeanmarc
I can't recommend it enough! Rating : 5/5 Respond to Siyan