What category is the 2003 KTM 640 Duke?

The 2003 KTM 640 Duke has a Category of Super motard.

What is the engine size of the 2003 KTM 640 Duke?

The 2003 KTM 640 Duke has a Capacity: of 625.00 ccm (38.14 cubic inches).

What type of engine does the 2003 KTM 640 Duke have?

The 2003 KTM 640 Duke has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2003 KTM 640 Duke?

The 2003 KTM 640 Duke has a Power of 54.80.

What is the torque of the 2003 KTM 640 Duke?

The 2003 KTM 640 Duke has a Torque of 60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500.

Is the 2003 KTM 640 Duke air cooled or liquid cooled?

The 2003 KTM 640 Duke has a Cooling system of Liquid.

How many gears does the 2003 KTM 640 Duke have?

The 2003 KTM 640 Duke has a Gearbox of 5-speed.

How much does the 2003 KTM 640 Duke weigh?

The 2003 KTM 640 Duke has a Dry weight of 149.0 kg (328.5 pounds).

What is the seat height of the 2003 KTM 640 Duke?

The 2003 KTM 640 Duke has a Seat height of 900 mm (35.4 inches) If adjustable, lowest setting..

KTM 640 Duke - 2003 Specifications and Reviews

The 2003 KTM 640 Duke is a lightweight supermoto designed for riders seeking playful agility and everyday versatility. Its 625cc single-cylinder engine delivers strong low-end torque ideal for urban riding and weekend adventures. Known for responsive handling and minimalist styling, it appeals to riders valuing character over raw power.

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General information
Category	Super motard
Year	2003
Model	KTM 640 Duke
Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Fuel system	Carburettor
Valves per cylinder	4
Bore x stroke	101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression	11.5:1
Torque	60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500
Power	54.80
Engine type	Single cylinder, four-stroke
Capacity:	625.00 ccm (38.14 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes diameter	220 mm (8.7 inches)
Rear brakes	Single disc
Front brakes diameter	320 mm (12.6 inches)
Front brakes	Single disc
Rear tyre dimensions	160/70-17
Front tyre dimensions	120/70-17
Rear suspension travel	170 mm (6.7 inches)
Rear suspension	WP - Monoshock
Front suspension travel	140 mm (5.5 inches)
Front suspension	WP-USD 43 MA

Physical measures and capacities
Reserve fuel capacity	2.50 litres (0.66 gallons)
Fuel capacity	12.00 litres (3.17 gallons)
Wheelbase	1,460 mm (57.5 inches)
Ground clearance	270 mm (10.6 inches)
Seat height	900 mm (35.4 inches) If adjustable, lowest setting.
Power/weight ratio	0.3678 HP/kg
Dry weight	149.0 kg (328.5 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

54.8 hp

Peak Power

4.2s

0-60 mph

Best For

Track65%

City75%

Cornering90%

Daily Riding55%

Touring25%

Passenger25%

Rider Profile

Best For	This is best suited to intermediate or experienced riders who are comfortable with a light, torquey single that demands active input.
Purpose	Built as a supermotard, it excels at flickable, aggressive cornering on twisty roads and tight urban streets rather than outright top speed.
Rider Fit	The tall 900mm seat height and firm, minimal suspension travel favor taller or more athletic riders who can handle a bike biased toward stand-up control.
Character	Raw, punchy, and lightweight, it delivers a visceral single-cylinder thump with sharp, go-kart-like handling.
Not Ideal For	It is not a good fit for riders seeking long-distance comfort, wind protection, or smooth two-up touring capability.

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

Rider Fit Visualizer

2003 KTM 640 Duke Rider Ergonomics Assessment

Your height

Inseam (optional)

Units

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 900mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 KTM 640 Duke, with a relaxed knee angle of around 145 degrees and a forward-leaning riding position.

Data quality: measured. 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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