
KTM 640 Duke
Key specifications
Overview
Introducing the 2003 KTM 640 Duke, a quintessential super motard that masterfully blends agility, power, and style. This bike stands out in the crowded marketplace for its unique combination of off-road prowess and street-savvy performance. As KTM’s foray into the super motard segment, the Duke embodies the spirit of adventure and the thrill of urban riding, making it a favorite for both seasoned riders and newcomers looking to experience the raw energy of a single-cylinder motorcycle. At the heart of the 640 Duke lies a robust 625cc single-cylinder, four-stroke engine, delivering an exhilarating 54.8 horsepower at a lively 7500 RPM. This power is complemented by a meaty torque of 60 Nm available at 5500 RPM, providing riders with the kind of punch that makes quick accelerations feel effortless. The engine's 11.5:1 compression ratio and four-valve setup ensure smooth power delivery and impressive throttle response. The combination of a 5-speed gearbox and a chain final drive means that the Duke is not just about raw power; it also offers a thrilling experience through city streets and winding country roads alike. The 2003 Duke is equipped with advanced features that enhance both performance and comfort. It sports a WP-USD 43 MA front suspension that boasts 140mm of travel, allowing it to soak up bumps and potholes with ease, while the rear WP-Monoshock suspension provides an additional 170mm of travel for an exceptionally smooth ride. Stopping power comes from a 320mm front disc and a 220mm rear disc, ensuring that this bike can handle whatever the road throws its way. With a weight of just 149 kg and a ground clearance of 270mm, the Duke is nimble and responsive, ready to tackle both urban environments and off-road trails. In summary, the 2003 KTM 640 Duke is a motorcycle that embodies the essence of super motard riding. With its powerful engine, agile handling, and distinctive design, it remains a beloved choice for enthusiasts who crave a bike that can deliver both excitement and practicality. Whether navigating city streets or exploring backroads, the 640 Duke promises an unforgettable ride.
Pros
- Lightweight & Agile: At only 149 kg, the 640 Duke offers exceptional maneuverability, making it perfect for city riding and tight corners.
- Powerful Engine: The single-cylinder engine delivers impressive torque and horsepower, providing a thrilling riding experience.
- Versatile Suspension: With advanced WP suspension components, the Duke offers excellent handling and comfort on various terrains.
Cons
- Limited Fuel Capacity: The 12-liter tank may require more frequent fuel stops on longer rides.
- Seat Height: At 900mm, the seat height may be a challenge for shorter riders, potentially affecting comfort and control.
- Single-Cylinder Vibration: While it enhances character, the single-cylinder engine can produce noticeable vibrations at higher RPMs, which might not appeal to everyone.
Technical details
Source specification data
- Make
- KTM
- Model
- 640 Duke
- Category
- Super motard
- Power
- 54.80 HP (40.0 kW)) @ 7500 RPM
- Torque
- 60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500 RPM
- Gearbox
- 5-speed
- Fuel System
- Carburettor
- Bore X Stroke
- 101.0 x 78.0 mm (4.0 x 3.1 inches)
- Compression
- 11.5:1
- Displacement
- 625.00 ccm (38.14 cubic inches)
- Cooling System
- Liquid
- Engine Details
- Single cylinder, four-stroke
- Valves Per Cylinder
- 4
- Transmission Type Final Drive
- Chain
- Dry Weight
- 149.0 kg (328.5 pounds)
- Seat Height
- 900 mm (35.4 inches) If adjustable, lowest setting.
- Fuel Capacity
- 12.00 litres (3.17 gallons)
- Ground Clearance
- 270 mm (10.6 inches)
- Power Weight Ratio
- 0.3678 HP/kg
- Reserve Fuel Capacity
- 2.50 litres (0.66 gallons)
- Rear Tyre
- 160/70-17
- Front Tyre
- 120/70-17
- Rear Brakes
- Single disc
- Front Brakes
- Single disc
- Rear Suspension
- WP - Monoshock
- Front Suspension
- WP-USD 43 MA
- Rear Wheel Travel
- 170 mm (6.7 inches)
- Front Wheel Travel
- 140 mm (5.5 inches)
- Rear Brakes Diameter
- 220 mm (8.7 inches)
- Front Brakes Diameter
- 320 mm (12.6 inches)