What category is the 2025 KTM 390 Duke?

General information
Category	Enduro / offroad
Model name	KTM 450 EXC-F Six Days
Year	2025
Engine and Transmission Specifications
Greenhouse gases	85.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	3.68 litres/100 km (27.2 km/l or 63.92 mpg)
Driveline	520 X-ring chain
Clutch	Wet, DDS multi-disc clutch, Brembo hydraulics
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Liquid
Ignition	Keihin EMS
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Injection
Bore x stroke	95.0 x 63.4 mm (3.7 x 2.5 inches)
Engine type	Single cylinder, four-stroke
Capacity:	449.9 ccm (27.45 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Diameter	260 mm (10.2 inches)
Front brakes	Double disc
Rear tire	2.15-18
Front tire	1.60-21
Rear wheel travel	310 mm (12.2 inches)
Rear suspension	WP Xplor PDS schock absorber
Front wheel travel	300 mm (11.8 inches)
Front suspension	WP XACT-USD, Ø 48 mm
Rake (fork angle)	26.1°
Frame type	Central double-cradle-type 25CrMo4 steel

Physical measures and capacities
Fuel capacity	8.50 litres (2.25 US gallons)
Ground clearance	347 mm (13.7 inches)
Seat height	963 mm (37.9 inches) If adjustable, lowest setting.
Dry weight	107.7 kg (237.4 pounds)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Electrical	2 Ah lithium-ion battery
Starter	Electric
Color options	Orange/Blue/White/Black/Red

Performance Profile & Rider Fit

44 hp

Peak Power

4.2s

0-60 mph

Best For

Track68%

City88%

Cornering85%

Daily Riding78%

Touring32%

Passenger35%

Rider Profile

Best For	Well suited to newer riders progressing beyond a starter bike as well as experienced riders wanting a light, lively single-cylinder machine.
Purpose	Built primarily as a nimble city and canyon-carving streetfighter rather than a long-distance or off-road machine.
Rider Fit	Its low dry weight and slim trellis chassis make it easy to flick around and manageable for riders of varying strength and stature, though the 830mm seat height may challenge shorter riders.
Character	A punchy, single-cylinder naked bike with sharp handling, strong brakes, and an eager, playful attitude that rewards aggressive riding.
Not Ideal For	Not the right choice for riders seeking a plush, wind-protected long-haul tourer or a capable off-road adventure companion.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

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Inseam (optional)

Units

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Feet:

At 963mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with cannot reach comfortably on the 2025 KTM 390 Duke, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: estimated (wheelbase estimated from this category's typical bike, not this model's own spec). Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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