
KTM 690 Duke
Key specifications
Overview
Introducing the 2008 KTM 690 Duke, a standout in the naked bike category that captures the spirit of urban riding and spirited weekend escapes. KTM, renowned for its commitment to performance and cutting-edge engineering, designed the 690 Duke to cater to riders who crave agility, responsiveness, and an unfiltered connection with the road. With its minimalist styling and aggressive stance, the 690 Duke isn’t just a motorcycle; it’s an invitation to embrace the thrill of the ride while navigating through bustling city streets or winding backroads. At the heart of the 690 Duke lies a 654 ccm single-cylinder, four-stroke engine that packs a punch with 64.36 horsepower at 7,500 RPM and a torque output of 67 Nm at 5,500 RPM. This engine delivers exhilarating acceleration and a spirited performance, allowing riders to seamlessly blend power with control. The 6-speed gearbox enhances the riding experience, providing smooth transitions between gears. Coupled with a lightweight design of just 148.5 kg (327.4 pounds), the Duke boasts an impressive power-to-weight ratio of 0.4334 HP/kg, making it an agile performer that’s perfect for both spirited rides and everyday commuting. KTM has equipped the 690 Duke with a variety of features that enhance its performance and rider comfort. The chromium-molybdenum trellis frame not only contributes to the bike's lightweight nature but also provides exceptional rigidity and handling prowess. The WP suspension components, with 200 mm of front travel and 210 mm in the rear, deliver a smooth ride over various terrains, allowing the rider to tackle corners with confidence. Additionally, the dual Keihin carburetors ensure optimal fuel delivery, while the electric starter simplifies the ignition process, making every ride as effortless as it is exhilarating. **
Pros
- Exceptional Power-to-Weight Ratio: The lightweight construction combined with powerful engine performance ensures quick acceleration and nimble handling.
- Agile Handling: The trellis frame and advanced suspension offer excellent stability and responsiveness, making it a joy to ride on twisty roads.
- Distinctive Design: The minimalist and aggressive aesthetics of the 690 Duke turn heads and reflect its performance-oriented character.
Cons
- Comfort on Long Rides: The relatively high seat height and firm suspension may not provide the best comfort for extended journeys.
- Limited Fuel Capacity: With a fuel tank capacity of only 13.5 liters (3.57 gallons), longer rides may require more frequent refueling stops.
- Single-Cylinder Vibration: The character of the single-cylinder engine can lead to noticeable vibrations, particularly at higher RPMs, which may be less appealing to some riders.
Technical details
Source specification data
- Make
- KTM
- Model
- 690 Duke
- Category
- Naked bike
- Starter
- Electric
- Power
- 64.36 HP (47.0 kW)) @ 7500 RPM
- Clutch
- APTC Wet multi-disc clutch, operated hydraulically
- Torque
- 67.00 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 5500 RPM
- Gearbox
- 6-speed
- Ignition
- 2 X keihin
- Fuel System
- Carburettor
- Bore X Stroke
- 102.0 x 80.0 mm (4.0 x 3.1 inches)
- Compression
- 11.8:1
- Displacement
- 654.00 ccm (39.91 cubic inches)
- Cooling System
- Liquid
- Engine Details
- Single cylinder, four-stroke
- Exhaust System
- Stainless steel underfloor silencer with integrated catalytic converter
- Lubrication System
- Pressure lubrication with 2 Eaton pumps
- Valves Per Cylinder
- 4
- Dry Weight
- 148.5 kg (327.4 pounds)
- Seat Height
- 865 mm (34.1 inches) If adjustable, lowest setting.
- Fuel Capacity
- 13.50 litres (3.57 gallons)
- Ground Clearance
- 155 mm (6.1 inches)
- Power Weight Ratio
- 0.4334 HP/kg
- Rear Tyre
- 160/60-17
- Frame Type
- Chromium
- -
- Molybdenum
- trellis frame, powder-coated
- Front Tyre
- 120/70-17
- Rear Brakes
- Single disc
- Front Brakes
- Single disc
- Rear Suspension
- WP monoshock
- Front Suspension
- WP USD
- Rear Wheel Travel
- 210 mm (8.3 inches)
- Front Wheel Travel
- 200 mm (7.9 inches)
- Rear Brakes Diameter
- 220 mm (8.7 inches)
- Front Brakes Diameter
- 320 mm (12.6 inches)