Back to Bike FinderYears: 2007 · 2000 · 1999
KTM 640 Duke II
1999Naked

KTM 640 Duke II

Key specifications

Engine
625 cc
Power
60 HP
Weight
145 kg
Fuel type
petrol
Fuel capacity
3.2 L
Transmission
5-speed
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 1999 KTM 640 Duke II, a spirited contender in the super motard category that perfectly embodies KTM's aggressive approach to street motorcycles. With its distinctive styling and raw performance capabilities, the Duke II is a bike that commands attention and respect, appealing to riders who crave excitement and versatility. This model is not just a motorcycle; it's a statement, designed for those who seek to blend urban commuting with thrilling weekend rides. As the successor to the original Duke, the 640 Duke II brings forth an enhanced experience that caters to both novice and experienced riders alike. At the heart of the 640 Duke II lies a robust 625cc single-cylinder, four-stroke engine, delivering an exhilarating 60 horsepower at 7500 RPM. This potent powerplant translates into an impressive top speed of 170 km/h (105.6 mph), making it a formidable machine on both city streets and winding backroads. The liquid cooling system ensures optimal engine temperatures, allowing for sustained performance during spirited rides. Paired with a precise 5-speed gearbox and a chain final drive, the Duke II offers seamless power delivery and an engaging riding experience. Its lightweight design, tipping the scales at just 145 kg (319.7 pounds), combined with a power-to-weight ratio of 0.4138 HP/kg, allows for nimble handling and agile cornering that will leave you grinning with every twist of the throttle. The 1999 KTM 640 Duke II is packed with features that enhance its performance and rider experience. It boasts a minimalist yet functional design, with single disc brakes at both the front and rear that provide reliable stopping power. The 12-liter fuel tank ensures you're equipped for longer rides without constant refueling stops, allowing you to enjoy the open road. The bike’s sporty ergonomics, including a slim profile and upright seating position, make it ideal for navigating tight urban environments while also providing comfort for longer journeys. Additionally, the Duke II's striking visual appeal, characterized by its sharp lines and KTM's signature orange and black color scheme, ensures that it stands out in any crowd. In summary, the 1999 KTM 640 Duke II is a thrilling and engaging motorcycle that captures the essence of super motard riding. It’s a bike that appeals to those who value performance, agility, and distinctive style, making it a standout choice in the crowded motorcycle market.

Pros

  • Agile Handling: The lightweight frame and responsive suspension make the Duke II incredibly maneuverable, perfect for urban environments and twisty roads.
  • Powerful Engine: The 625cc single-cylinder engine delivers impressive torque and acceleration, ensuring a thrilling ride every time you twist the throttle.
  • Distinctive Styling: With its bold design and iconic KTM colors, the Duke II is visually striking and commands attention wherever it goes.

Cons

  • Limited Fuel Capacity: The 12-liter tank can be limiting for longer rides, requiring more frequent fuel stops on extended journeys.
  • Single-Cylinder Vibration: As a single-cylinder bike, it can produce noticeable vibrations at higher RPMs, which may not be to everyone's liking.
  • Basic Features: While the bike is performance-oriented, it lacks some of the modern amenities found in newer models, such as advanced electronics and rider aids.

Technical details

Source specification data

Make
KTM
Model
640 Duke II
Category
Super motard
Power
60.00 HP (43.8 kW)) @ 7500 RPM
Gearbox
5-speed
Top Speed
170.0 km/h (105.6 mph)
Displacement
625.00 ccm (38.14 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Transmission Type Final Drive
Chain
Dry Weight
145.0 kg (319.7 pounds)
Fuel Capacity
12.00 litres (3.17 gallons)
Power Weight Ratio
0.4138 HP/kg
Rear Brakes
Single disc
Front Brakes
Single disc