KTM 640 Duke II Yellow - Black - Specifications & Review

640 Duke II Yellow - Black

Article Complete Info

Articleid846633
CategorySuper motard
MakeKTM
Model640 Duke II Yellow - Black
Year2004

Chassis, Suspension, Brakes & Wheels

FrametypeChromium-molybdenum, power-coated
FrontbrakesSingle disc
Frontbrakesdiameter320 mm (12.6 inches)
FrontsuspensionWP-USD 43 MA
Fronttyre120/70-17
RearbrakesSingle disc
Rearbrakesdiameter220 mm (8.7 inches)
RearsuspensionWP - Monoshock
Trail64 mm (2.5 inches)

Engine & Transmission

Borexstroke101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression11.7:1
CoolingsystemLiquid
Displacement625.00 ccm (38.14 cubic inches)
EnginedetailsSingle cylinder, four-stroke
FuelsystemCarburettor
Gearbox5-speed
Power53.64 HP (39.2 kW)) @ 7000 RPM
Torque60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500 RPM
TransmissiontypefinaldriveChain

Other Specifications

CommentsNot available in the US.

Physical Measures & Capacities

Alternateseatheight675 mm (26.6 inches) If adjustable, highest setting.
Dryweight149.0 kg (328.5 pounds)
Fuelcapacity12.00 litres (3.17 gallons)
Groundclearance270 mm (10.6 inches)
Overallheight640 mm (25.2 inches)
Overallwidth640 mm (25.2 inches)
Powerweightratio0.3600 HP/kg
Seatheight900 mm (35.4 inches) If adjustable, lowest setting.

About KTM

Country of Origin: Austria
Founder: Hans Trunkenpolz (later joined by Ernst Kronreif)
Best Known For: Off-road/enduro supremacy, Dakar wins, Duke/RC streetbikes, and READY TO RACE ethos

Company History

KTM evolved from a postwar repair shop into a racing juggernaut by treating competition as R&D. Lightweight two-strokes made the brand a force in motocross and enduro; later four-strokes and advanced electronics cemented dominance. Dakar Rally victories showcased reliability under extreme conditions and fed the Adventure lineup—bikes that balance long-travel composure with startling pace. On the street, the Duke and RC families brought razor geometry and punchy singles/twins to license tiers worldwide, while the 1290 Super Duke and Adventure pushed the IMU-aided edge of performance. Corporate agility—acquisitions, platform sharing with Husqvarna/GASGAS—expanded reach without blurring identity. Historically, KTM changed expectations for chassis feedback and electronics integration in dirt and on road, proving that orange-painted ferocity could also be precise. The brand’s throughline is simple: build light, communicate grip, and let riders go fast safely. Few companies have turned a color and a slogan into such a reliable proxy for results.

Other Years

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