KTM 640 Duke II Red
2005Super Moto

KTM 640 Duke II Red

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 2005 KTM 640 Duke II Red, a standout in the supermotard segment that blends the best of sport and street riding. This bike caters to enthusiasts who crave agility and performance in urban settings while still possessing the ruggedness to tackle twisty backroads. KTM has carved out a niche with the Duke II, appealing to those who seek a unique blend of style, power, and versatility. With its striking red finish and distinct styling, this model certainly turns heads, all while packing a punch in terms of engineering and handling. At the heart of the 640 Duke II is a robust 625cc single-cylinder, four-stroke engine that delivers a heart-pounding 53.64 horsepower at 6750 RPM. The torque output of 60 Nm at 5000 RPM ensures that acceleration is both swift and smooth, making it perfect for darting through city traffic or carving up mountain roads. The engine’s impressive compression ratio of 11.7:1 and its sophisticated Mikuni BST 40 carburettor fuel system work in harmony to provide a thrilling ride. Coupled with a lightweight chassis weighing just 152 kg (335.1 pounds) and a well-matched 5-speed gearbox, the Duke II offers an exhilarating power-to-weight ratio that promises a highly responsive and engaging riding experience. Technological advancements and thoughtful engineering are evident throughout the 640 Duke II. The frame is crafted from durable chromium-molybdenum and features a power-coated finish, ensuring both resilience and aesthetic appeal. The WP-USD 43 mm front suspension and WP monoshock rear suspension provide excellent handling and comfort, while the powerful braking system, equipped with a 320 mm front disc and a 220 mm rear disc, ensures confident stopping power. Notably, the bike also boasts both electric and kick-start options, adding to its versatility. Ground clearance of 280 mm allows for spirited riding over uneven terrain, while the seat height of 900 mm provides an accommodating riding position for most riders. **

Pros

  • Lightweight & Agile: Weighing just 152 kg, the Duke II delivers exceptional maneuverability, making it a joy to ride through city streets and twisty roads.
  • Powerful Single-Cylinder Engine: The 625cc engine offers impressive torque and horsepower, providing thrilling acceleration and responsiveness.
  • Unique Style: With its striking red finish and distinctive design, the Duke II stands out in a crowd, appealing to riders who value aesthetics as much as performance.

Cons

  • Not Available in the USA: Enthusiasts in the United States may find themselves unable to purchase this model, limiting its availability.
  • Firm Suspension: While the WP suspension offers excellent handling, it may be too firm for some riders seeking a softer ride on rough roads.
  • Single-Cylinder Vibration: The nature of the single-cylinder engine can lead to vibrations at higher RPMs, which may not be to everyone's liking during long rides.

Technical details

Source specification data

Make
KTM
Model
640 Duke II Red
Category
Super motard
Starter
Electric & kick
Comments
Not available in the USA.
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) @ 5000 RPM
Gearbox
5-speed
Ignition
Kokusan DC-CDI
Fuel System
Carburettor. Mikuni BST 40
Bore X Stroke
101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression
11.7:1
Displacement
625.00 ccm (38.14 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
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)
Overall Height
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, power-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´
Rear Wheel Travel
335 mm (13.2 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
320 mm (12.6 inches)