Supermotos

2002KTM 640 Duke II

38 fields on record

The 2002 KTM 640 Duke II is a single-cylinder street bike known for its distinctive twin headlights. Its liquid-cooled 625cc four-stroke single makes 49 hp and 54 Nm through a five-speed gearbox and chain, for a top speed of about 170 km/h. An 880 mm seat, 145 kg dry weight and 12-litre tank make it fun on twisty roads.

Capacity: 625.0 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 145.0 kg
Seat height: 880 mm
Power: 49.0 HP (36.0 kW)

⇄ Compare with another bike ＋ Add to garage All model years

Other years 1999 2000 2002 2003 2004 2005 2006 2007

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail55%

Cornering85%

City riding75%

Daily riding55%

Touring30%

Two-up25%

Track55%

Best for: A lightweight, muscular street naked designed for sharp handling, urban fun, and spirited backroad riding rather than outright speed or distance.
Built for: Gritty, torquey, and mechanical in feel, this bike rewards riders who enjoy an engaging, old-school single-cylinder thumper experience with premium WP suspension.
Not ideal for: Not a good fit for riders seeking smooth long-distance comfort, pillion-friendly touring capability, or high top-speed thrills.

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 880mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2002 KTM 640 Duke II, with a relaxed knee angle of around 140 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: 625.0 ccm
Power: 49.0 HP (36.0 kW)
Torque: 54.0 Nm (5.5 kgf-m)
Engine type: Single, four-stroke
Power/weight ratio: 0.3379 HP/kg (dry)
Bore x stroke: 101.0 x 78.0 mm
Compression: 11.7:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric & kick
Ignition: Kokusan DC-CDI
Valves per cylinder: 4
Lubrication system: Pressure lubrication with 2 oil pumps

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multi-disc clutch, operated hydraulically

Performance

Top speed: 170.0 km/h (105.6 mph)

Dimensions & weight

Wheelbase: 1460 mm
Seat height: 880 mm
Dry weight: 145.0 kg
Fuel capacity: 12.00 litres
Ground clearance: 280 mm

Chassis & suspension

Frame: Chromium-molybdenum, powder-coated
Front suspension: WP USD
Rear suspension: WP monoshock
Front wheel travel: 140 mm
Rear wheel travel: 170 mm
Rake (fork angle): 26.5°
Trail: 109 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-HR17
Rear tyre: 160/60-HR17

Other

Color options: Silver/black, green/black

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	1999	2002	2004	2005	2007
Capacity	625 cc	625 cc	625 cc	625 cc	625 cc
Dry weight	145 kg	145 kg	145 kg	145 kg	152 kg
Seat height	880 mm	880 mm	880 mm	880 mm	900 mm
Fuel capacity	12 L	12 L	12 L	12 L	11.2 L