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Naked bike · 2024

390 Duke

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MotoLibrary Score
43 /100 Commuter
Power/Weight
0.3 hp/kg
Torque
39 Nm
Engine
399 ccm

2024 KTM 390 Duke Technical Analysis & Specification Breakdown

Engineered by KTM for the naked motorcycle segment, the 2024 KTM 390 Duke utilizes a 398.7 cc (24.3 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 44.3 HP (32.3 kW) while maximum torque reaches 39 Nm (28.8 lb-ft), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 111.1 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the 390 Duke measures 150 kg (331 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.39 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,357 mm (53.4 in) wheelbase engineered for quick, flickable steering geometry. The 13.4-liter (3.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's KTM archive, this model family spans 11 indexed model years from 2013 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
111.1 HP/L
Power-to-Weight
0.3 HP/kg (3.39 kg/HP)
Standover Height
820 mm (32.3 in)
Engine
Displacement 398.7 ccm (24.33 cubic inches)
Engine Type Single cylinder, four-stroke
Power 44.3 HP (32.3 kW))
Torque 39.0 Nm (4.0 kgf-m or 28.8 ft.lbs)
Bore x Stroke 89.0 x 64.0 mm (3.5 x 2.5 inches)
Valves/Cylinder 4
Fuel System Injection
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Lubrication Wet sump
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch PASC™ antihopping clutch, mechanically operated
Driveline 520 X-ring chain
Performance
Exhaust Bosch EMS with RBW
Chassis
Frame Type Steel trellis frame, powder coated
Rake 24.0°
Front Suspension WP Apex 43
Front Travel 150 mm (5.9 inches)
Rear Suspension WP Apex monoshock
Rear Travel 150 mm (5.9 inches)
Wheelbase 1357 mm (53.4 inches)
Ground Clearance 175 mm (6.9 inches)
Wheels & Brakes
Front Tyre 110/90-17
Rear Tyre 150/60-17
Front Brakes Double disc. ABS. Four-piston radial fixed calliper.
Front Brake Ø 320 mm (12.6 inches)
Rear Brakes Single disc. ABS. 2 piston floating caliper.
Rear Brake Ø 230 mm (9.1 inches)
Wheels Alloy wheels
Dimensions & Weight
Dry Weight 150.0 kg (330.7 pounds)
Power/Weight 0.2950 HP/kg
Seat Height 820 mm (32.3 inches) If adjustable, lowest setting.
Fuel Capacity 13.40 litres (3.54 US gallons)
Other
Starter Electric
Color Options Black/orange, blue/orange/black
Instruments TFT Instrumentation
Electrical 8 Ah battery
Light LED headlight
Notes

2 ride modes.

More from KTM
Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏍️
Best For
City & Weekend Rides
📏
Seat Height
82 cm / 32.3 in
⚖️
Handling
Manageable weight for most riders
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