2008KTM 690 Duke

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The 2008 KTM 690 Duke is a lightweight naked bike powered by a potent 654cc single-cylinder engine delivering 64 horsepower, making it ideal for riders seeking agile handling and spirited performance. Known for its minimalist design, precise engineering, and accessible power delivery, the Duke suits both experienced enthusiasts and talented novices looking for a thrilling yet manageable everyday motorcycle.

Capacity: 654.0 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 148.5 kg
Seat height: 865 mm
Power: 64.4 HP (47.4 kW) @ 7500 RPM

⇄ Compare with another bike All model years

Other years 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail18%

Cornering85%

City riding80%

Daily riding72%

Touring32%

Two-up38%

Track58%

Best for: A sharp, minimalist streetfighter built for backroad carving, spirited city blasts and quick B-road runs rather than long-haul mileage.
Built for: A single-cylinder hooligan: torquey thumper punch, razor-sharp handling and no-nonsense KTM attitude packed into a featherweight trellis chassis.
Not ideal for: Not for tourers, two-up cruisers, or riders wanting all-day comfort, a low seat, or smooth long-distance highway manners.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 865mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2008 KTM 690 Duke, with a relaxed knee angle of around 135 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine

Capacity: 654.0 ccm
Power: 64.4 HP (47.4 kW) @ 7500 RPM
EPA Certificate No.: 8KTXC0.65SPM-003
EPA CO Emissions: 7.2 CO g/km
Torque: 67.0 Nm (6.8 kgf-m) @ 5500 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.4337 HP/kg
Bore x stroke: 102.0 x 80.0 mm
Compression: 11.8:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: 2 X keihin
Aspiration: Naturally aspirated
Valves per cylinder: 4
Lubrication system: Pressure lubrication with 2 Eaton pumps

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: APTC Wet multi-disc clutch, operated hydraulically

Dimensions & weight

Wheelbase: 1472 mm
Seat height: 865 mm
Dry weight: 148.5 kg
Fuel capacity: 13.50 litres
Ground clearance: 155 mm

Chassis & suspension

Frame: Chromium-molybdenum trellis frame, powder-coated
Front suspension: WP USD
Rear suspension: WP monoshock
Front wheel travel: 200 mm
Rear wheel travel: 210 mm
Rake (fork angle): 26.5°
Trail: 115 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 320 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 120/70-17
Rear tyre: 160/60-17

Other

Fuel Tank Material: P

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2008	2011	2014	2016	2019
Capacity	654.00 ccm (39.91 cubic inches)	654.00 ccm (39.91 cubic inches)	690.00 ccm (42.10 cubic inches)	690.00 ccm (42.10 cubic inches)	690.0 ccm (42.10 cubic inches)
Dry weight	148.5 kg (327.4 pounds)	148.5 kg (327.4 pounds)	150.0 kg (330.7 pounds)	149.5 kg (329.6 pounds)	148.5 kg (327.4 pounds)
Seat height	865 mm (34.1 inches)	865 mm (34.1 inches)	835 mm (32.9 inches)	835 mm (32.9 inches)	835 mm (32.9 inches)
Fuel capacity	13.50 litres (3.57 gallons)	13.50 litres (3.57 gallons)	13.80 litres (3.65 gallons)	14.00 litres (3.70 gallons)	14.00 litres (3.70 US gallons)
Color options	—	—	Black, white	Orange	Orange