Back to Bike FinderYears: 2005 · 2004 · 2003
KTM 640 LC4 Adventure
2004Off-road

KTM 640 LC4 Adventure

Key specifications

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

Overview

Introducing the 2004 KTM 640 LC4 Adventure, a motorcycle that embodies the spirit of exploration and off-road capability. Positioned within the enduro-offroad category, the 640 LC4 Adventure is designed for riders who crave adventure and versatility. With its rugged construction and true dual-sport capabilities, this bike is perfect for both navigating city streets and tackling challenging trails. While it may not be readily available in the US market, its reputation as a reliable companion for adventurous souls has made it a sought-after model among enthusiasts globally. At the heart of the KTM 640 LC4 Adventure lies a robust 625 cc single-cylinder, four-stroke engine, delivering a thrilling power output of 53.64 HP at 7000 RPM. This powerhouse is complemented by a torque rating of 55 Nm at 5500 RPM, ensuring that riders experience exhilarating acceleration and impressive hill-climbing abilities. The liquid-cooled engine, equipped with a carburettor fuel system, operates with a compression ratio of 11.5:1, allowing for strong performance across a variety of terrains. The 5-speed gearbox guarantees smooth gear transitions, while the lightweight design—with a total weight of 158 kg—enhances maneuverability, making it a joy to ride both on and off the beaten path. The 640 LC4 Adventure is packed with features that cater to the needs of the modern adventurer. Its chromium-molybdenum frame is coated for durability, providing both strength and style. The WP-USD 48 MA front suspension and WP Monoshock rear suspension ensure a comfortable ride, absorbing bumps and obstacles with ease. The braking system is equally impressive, featuring double discs at the front and a single disc at the rear, providing reliable stopping power when you need it most. With a generous fuel capacity of 28 liters, the 640 LC4 is built for long journeys, allowing riders to traverse vast landscapes without the constant worry of refueling. **

Pros

  • Powerful Engine Performance: The single-cylinder engine provides robust acceleration and impressive torque for tackling varied terrains.
  • Excellent Suspension Setup: The high-quality WP suspension components offer superior handling and comfort, making off-road rides smooth and enjoyable.
  • Adventure-ready Design: With a significant fuel capacity and durable build, the 640 LC4 Adventure is well-suited for long-distance exploration.

Cons

  • Limited Availability: The motorcycle is not available in the US, which may restrict access for potential buyers in that market.
  • Higher Seat Height: At 945 mm, the seat height may be challenging for shorter riders, limiting accessibility for some enthusiasts.
  • Basic Instrumentation: The bike's dashboard features minimal instrumentation, which may not provide all the information that some riders desire for a more connected riding experience.

Technical details

Source specification data

Make
KTM
Model
640 LC4 Adventure
Category
Enduro-offroad
Comments
Not available in the US.
Power
53.64 HP (39.2 kW)) @ 7000 RPM
Torque
55.00 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5500 RPM
Gearbox
5-speed
Fuel System
Carburettor
Bore X Stroke
101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression
11.5:1
Displacement
625.00 ccm (38.14 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
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
28.00 litres (7.40 gallons)
Overall Width
640 mm (25.2 inches)
Overall Height
640 mm (25.2 inches)
Ground Clearance
315 mm (12.4 inches)
Power Weight Ratio
0.3395 HP/kg
Alternate Seat Height
675 mm (26.6 inches) If adjustable, highest setting.
Frame Type
Chromium-molybdenum, power-coated
Front Tyre
90/90-21
Rear Brakes
Single disc
Front Brakes
Double disc
Rear Suspension
WP - Monoshock
Front Suspension
WP-USD 48 MA
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
300 mm (11.8 inches)