KTM 640 Adventure
2006Off-road

KTM 640 Adventure

Key specifications

Engine
625 cc
Power
54 HP
Torque
55 Nm
Weight
158 kg
Fuel type
petrol
Fuel capacity
6.7 L
Transmission
5-speed
Seat height
37 mm
Front brakes
Double disc
Rear brakes
Single disc

Overview

Introducing the 2006 KTM 640 Adventure, an iconic enduro-offroad motorcycle that perfectly blends rugged durability with spirited performance. Designed for those who crave adventure, this bike stands out in the dual-sport market, offering an agile and capable ride both on and off the beaten path. With its striking orange and black aesthetics, the 640 Adventure is not just a bike; it’s a declaration of intent for serious off-road enthusiasts and adventurers alike. At the heart of the KTM 640 Adventure lies a powerful 625cc single-cylinder, four-stroke engine, producing an exhilarating 53.64 horsepower at 7,000 RPM and a robust torque of 55 Nm at 5,500 RPM. The meticulously engineered powertrain, featuring a Mikuni BST 40 carburettor and a 5-speed gearbox, delivers seamless acceleration and responsiveness, making it a thrill to ride on both gravel roads and technical trails. With a compression ratio of 11.7:1, the 640 Adventure exhibits impressive power delivery and reliability, ensuring that it can handle the rigors of long-distance exploration. The combination of a lightweight frame and a power-to-weight ratio of 0.3395 HP/kg guarantees that this bike feels nimble and lively, even in the most challenging conditions. The KTM 640 Adventure is equipped with cutting-edge features that enhance its capability and rider experience. Its robust chromium-molybdenum frame and advanced WP suspension system provide exceptional stability and control, whether navigating rocky terrains or cruising down highways. The bike's dual-disc front brakes (11.8 inches) and a single rear disc (8.7 inches) ensure powerful stopping performance, giving riders the confidence to tackle steep descents and sudden obstacles. Additionally, the adjustable seat height of 945 mm offers versatility for different rider profiles, while the generous 25.5-litre fuel tank ensures that the adventure doesn't have to stop early due to fuel limitations. **

Pros

  • Versatile Performance: The powerful engine and lightweight design make it suitable for both off-road adventures and on-road commuting.
  • Excellent Suspension: The WP suspension provides outstanding handling and comfort, absorbing bumps and rough terrain with ease.
  • Rugged Aesthetics: The KTM's striking design and durable construction cater to riders who prioritize style and toughness.

Cons

  • Seat Height: The relatively tall seat height may be a challenge for shorter riders, potentially affecting comfort and control.
  • Limited Availability: The 640 Adventure is not available in the USA, which may limit access for interested riders.
  • Carburettor System: While the carburettor setup is reliable, it may not offer the fuel efficiency or ease of tuning found in modern fuel-injected systems.

Technical details

Source specification data

Make
KTM
Model
640 Adventure
Category
Enduro-offroad
Starter
Electric & kick
Comments
Not available in the USA.
Power
53.64 HP (39.2 kW)) @ 7000 RPM
Clutch
Wet multi-disc clutch, operated hydraulically
Torque
55.00 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5500 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
Exhaust System
Premium steel HGS 4
Lubrication System
Pressure lubrication with 2 Eaton pumps
Valves Per Cylinder
4
Transmission Type Final Drive
Chain
Dry Weight
158.0 kg (348.3 pounds)
Seat Height
945 mm (37.2 inches) If adjustable, lowest setting.
Fuel Capacity
25.50 litres (6.74 gallons)
Overall Width
640 mm (25.2 inches)
Ground Clearance
315 mm (12.4 inches)
Power Weight Ratio
0.3395 HP/kg
Rake
27.5°
Trail
124 mm (4.9 inches)
Rear Tyre
140/80-18
Frame Type
Chromium-molybdenum, powder-coated
Front Tyre
90/90-21
Rear Brakes
Single disc
Front Brakes
Double disc
Rear Suspension
WP - Monoshock
Front Suspension
WP-USD 48 mm
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
300 mm (11.8 inches)