The 2021 KTM 390 Duke embodies the essence of a true naked bike: attitude, performance, and versatility. This potent corner rocket boasts a four-stroke, single-cylinder engine with DOHC and finger followers, delivering 44 HP at a dry weight of under 150kg.
The ride is a masterclass in balance and control, effortlessly gliding from city streets to country lanes and rapid blasts of fun. Whether you’re an A2 license holder or a seasoned rider, the KTM 390 Duke is an absolute dream to ride, with its enviable power-to-weight performance and 13.4-liter tank ensuring sustained thrills.
The addition of an optional Quickshifter+ for 2021 takes the riding experience to new heights, while the BYBRE brake package and SUPERMOTO MODE add an extra layer of excitement. With its WP Suspension forks and 150mm adjustable shock, the KTM 390 Duke is as comfortable on the highway as it is on the twisties, making it the ultimate all-rounder for riders who crave a little bit of everything. And with its mouth-watering gray and white color options, you’ll be the envy of every onlooker.
Key Specifications
Engine Type
Four stroke, single cylinder, DOHC with finger followers, 4 valves
Engine Capacity
22.7 cubic inches / 373 cc
Max Power
43.5hp/ 32 kW@9500rpm
Max Torque
27.2 ft-lb / 37 nm
Fuel Tank Capacity
3.5 US gallons / 13.4 L
Seat Height
32.7 inches / 830 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
KTM 390 Duke
Year
2021
Engine
Engine Type
Four stroke, single cylinder, DOHC with finger followers, 4 valves
Displacement
22.7 cubic inches / 373 cc
Bore x Stroke
89 x 60 mm
Compression Ratio
12.6:1
Max Horsepower
43.5hp/ 32 kW@9500rpm
Max Torque
27.2 ft-lb / 37 nm
Engine Management System
Bosch Injection
Lubrication System
Wet sump
Cooling System
Liquid Cooled
Performance
Top Speed
n/a
*n/a – information not provided by manufacturer
Transmission
Clutch
Wet multi-disc clutch, hydraulically actuated
Gearbox
6 Speed
Final Drive
Chain 520-X Ring
Electrical & Electronics System
Starter
Electric
ABS
Bosch 9.1MP Two Channel ABS (Supermoto ABS)
Chassis & Suspension
Frame Type
Steel trellis frame, powder coated
Front Suspension
43mm WP APEX 43
Front Suspension Travel
5.6 inches / 142 mm
Rear Suspension
WP APEX – Monoshock
Rear Suspension Travel
5.9 inches / 150 mm
Trail
65
Wheels & Brakes
Front Tire Size
110/70 -17
Rear Tire Size
150/60-17
Front Brakes
Single320 mm disc, 4 piston radial fixed caliper
Rear Brakes
Single230 mm disc, 1 piston floating caliper
ABS
Bosch 9.1MP Two Channel ABS (Supermoto ABS)
Dimension & Weights
Seat Height
32.7 inches / 830 mm
Wheelbase
53.4 inches / 1357 mm
Ground Clearance
175 mm / 6.8 in
Fuel Tank Capacity
3.5 US gallons / 13.4 L
Dry Weight
149 kg / 328 lbs
Features
Four stroke, single cylinder engine
DOHC with finger followers, 4 valves
Euro5-compatible motor
44 Hp (32kw) power output
Less than 150kg dry weight
Ride by wire
46mm throttle bodies
Slipper clutch
13.4l fuel tank
Optional Quickshifter+
ABS through BYBRE brake package
SUPERMOTO MODE
Wide TFT dash display
WP Suspension forks with open-cartridge tech
150mm adjustable shock
Know someone who’d find this useful? Share this page with a friend, your riding club or your favourite motorcycle community.
Explore our collection of KTM motorcycles for detailed specifications and model information. Or browse all motorcycle manufacturers.
*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
