KTM 640 Duke II Limited Edition
2006Off-road

KTM 640 Duke II Limited Edition

Key specifications

Engine
625 cc
Power
54 HP
Torque
60 Nm
Weight
152 kg
Fuel type
petrol
Fuel capacity
3.0 L
Transmission
5-speed
Seat height
35 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2006 KTM 640 Duke II Limited Edition The 2006 KTM 640 Duke II Limited Edition is a prime example of KTM’s commitment to producing versatile, high-performance motorcycles designed for both enduro enthusiasts and urban riders. This bike stands out in the crowded market of dual-sport motorcycles with its unique blend of rugged off-road capability and sleek street style. The limited edition nature of this model adds a layer of exclusivity, appealing to collectors and riders who appreciate both performance and aesthetics. With its striking design and vibrant color scheme, the Duke II is not just a motorcycle; it’s a statement on two wheels. Engine Performance and Riding Characteristics At the heart of the 640 Duke II is a robust 625cc single-cylinder, four-stroke engine, delivering an impressive 53.64 horsepower at 6750 RPM and a torque rating of 60 Nm at 5500 RPM. This powertrain provides exhilarating acceleration, making it a joy to ride on both winding roads and rugged trails. The liquid-cooled engine is paired with a five-speed gearbox, allowing for smooth shifts and responsive power delivery. With a compression ratio of 11.7:1 and a Mikuni BST 40 carburettor, the Duke II excels in providing a thrilling riding experience. Riders will appreciate the agile handling, thanks to the lightweight frame weighing just 152 kg (335.1 lbs) and the generous ground clearance of 280 mm, allowing for confident maneuverability over obstacles. Key Features and Technology The KTM 640 Duke II Limited Edition is equipped with advanced features that enhance both safety and performance. The frame is constructed from durable chromium-molybdenum and is powder-coated for added resilience. The WP-USD front suspension offers an impressive 300 mm of travel, while the rear WP mono-shock provides a further 335 mm, ensuring that riders can tackle rough terrain with ease. Stopping power comes from a combination of a 320 mm front disc and a 220 mm rear disc, providing reliable braking performance in various conditions. Additional features include both electric and kick starters, ensuring that the bike is ready to ride, no matter the situation. **

Pros

    Cons

    • Versatile Performance: Excellent balance between off-road capability and on-road agility.
    • Lightweight Construction: Weighing in at just over 335 pounds, the Duke II is easy to handle and maneuver.
    • Strong Torque Delivery: With 60 Nm of torque available, riders can enjoy thrilling acceleration and responsive power.
    • Seat Height: At 900 mm, the seat height may be challenging for shorter riders, restricting accessibility.
    • Limited Fuel Capacity: The 11.20-litre tank may require more frequent stops on longer rides.
    • Single Cylinder Vibration: The single-cylinder engine can produce noticeable vibrations at higher RPMs, potentially affecting comfort during extended rides.

    Technical details

    Source specification data

    Make
    KTM
    Model
    640 Duke II Limited Edition
    Category
    Enduro-offroad
    Starter
    Electric & kick
    Power
    53.64 HP (39.2 kW)) @ 6750 RPM
    Clutch
    Wet multi-disc clutch, operated hydraulically
    Torque
    60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 5500 RPM
    Gearbox
    5-speed
    Ignition
    Kokusan DC-CDI
    Fuel System
    Carburettor. Mikuni BST 40
    Bore X Stroke
    100.0 x 72.0 mm (3.9 x 2.8 inches)
    Compression
    11.7:1
    Displacement
    625.00 ccm (38.14 cubic inches)
    Cooling System
    Liquid
    Engine Details
    Single cylinder, four-stroke
    Exhaust System
    Aluminum
    Lubrication System
    Pressure lubrication with 2 Eaton pumps
    Valves Per Cylinder
    4
    Transmission Type Final Drive
    Chain
    Dry Weight
    152.0 kg (335.1 pounds)
    Seat Height
    900 mm (35.4 inches) If adjustable, lowest setting.
    Fuel Capacity
    11.20 litres (2.96 gallons)
    Overall Width
    640 mm (25.2 inches)
    Ground Clearance
    280 mm (11.0 inches)
    Power Weight Ratio
    0.3529 HP/kg
    Rake
    26.5°
    Trail
    109 mm (4.3 inches)
    Rear Tyre
    160/70-17
    Frame Type
    Chromium-molybdenum, powder-coated
    Front Tyre
    120/70-17
    Rear Brakes
    Single disc
    Front Brakes
    Single disc
    Rear Suspension
    WP - Monoshock
    Front Suspension
    WP-USD 43 mm (1.89 inches)
    Rear Wheel Travel
    335 mm (13.2 inches)
    Front Wheel Travel
    300 mm (11.8 inches)
    Rear Brakes Diameter
    220 mm (8.7 inches)
    Front Brakes Diameter
    320 mm (12.6 inches)