KTM 640 Duke II Red - 2005 Specifications and Reviews

The 2005 KTM 640 Duke II Red is a lightweight supermotard designed for riders seeking nimble handling and urban agility. Its potent 625cc single-cylinder engine delivers strong low-end torque, making it ideal for city commuting and spirited back-road riding. Known for its aggressive styling and razor-sharp maneuverability, this bike excels in mixed riding conditions.

2005
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General information

CategorySuper motard
Year2005
ModelKTM 640 Duke II Red

Engine and Transmission Specifications

ClutchWet multi-disc clutch, operated hydraulically
Transmission typefinal driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication systemPressure lubrication with 2 Eaton pumps
StarterElectric & kick
IgnitionKokusan DC-CDI
Fuel controlOHC
Valves per cylinder4
Fuel systemCarburettor. Mikuni BST 40
Bore x stroke101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression11.7:1
Torque60.00
Power53.64
Stroke4
Engine typeSingle cylinder
Capacity:625.00 ccm (38.14 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,460 mm (57.5 inches)
Ground clearance280 mm (11.0 inches)
Overall width640 mm (25.2 inches)
Overall height640 mm (25.2 inches)
Seat height900 mm (35.4 inches) If adjustable, lowest setting.
Dry weight152.0 kg (335.1 pounds)

KTM 640 Duke II Red dimensions and frame

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter320 mm (12.6 inches)
Front brakesSingle disc
Rear tyre dimensions160/70-17
Front tyre dimensions120/70-17
Rear suspension travel335 mm (13.2 inches)
Rear suspensionWP - Monoshock
Front suspensionWP-USD 43 mm (1.89´
Trail109 mm (4.3 inches)
Rake (fork angle)26.5°
Frame typeChromium-molybdenum, power-coated
 
 

Speed and acceleration

Power/weight ratio0.3529 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity11.20 litres (2.96 gallons)

Performance Profile & Rider Fit

53.6 hp
Peak Power
4.8s
0-60 mph

Best For

Track65%
City75%
Cornering90%
Daily Riding55%
Touring25%
Passenger25%

Rider Profile

Best ForBest suited to intermediate or experienced riders who enjoy a light, punchy single-cylinder machine with a lively character.
PurposeBuilt for supermoto-style thrills: flickable handling, sharp cornering, and fun on twisty backroads or tight urban streets.
Rider FitTall seat height and a slim, upright riding position favor taller or confident riders comfortable with minimal wind protection.
CharacterA raw, torquey single-cylinder supermoto with aggressive handling and a distinctly analog, mechanical riding feel.
Not Ideal ForNot a good match for riders seeking long-distance comfort, high top-end speed, or smooth multi-cylinder refinement.

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

Rider Fit Visualizer

2005 KTM 640 Duke II Red Rider Ergonomics Assessment

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 2005 KTM 640 Duke II Red, 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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