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KTM 640 LC4 Enduro
2005Off-road

KTM 640 LC4 Enduro

Key specifications

Engine
625 cc
Weight
148 kg
Fuel type
petrol
Fuel capacity
3.0 L
Transmission
5-speed
Seat height
36 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2005 KTM 640 LC4 Enduro, a motorcycle that encapsulates the spirit of adventure and the thrill of off-road riding. As part of KTM's renowned Enduro lineup, this bike is designed for those who crave the rugged terrain and uncharted trails. With its powerful single-cylinder engine and lightweight chassis, the 640 LC4 Enduro stands as a testament to KTM's commitment to producing high-performance machines that excel in both cross-country and motocross environments, catering to riders who demand versatility and capability on every ride. At the heart of the 640 LC4 Enduro is a robust 625cc single-cylinder, four-stroke engine that delivers impressive torque and acceleration. With a compression ratio of 11.7:1 and a bore and stroke of 101.0 x 78.0 mm, this powerhouse is designed for serious off-road enthusiasts. The inclusion of a Mikuni BST 40 carburettor ensures precise fuel delivery, contributing to the bike's responsive throttle and smooth power band. The five-speed gearbox, coupled with a hydraulically-operated wet multi-disc clutch, allows for seamless gear shifts, making it easier to tackle technical trails and steep climbs. Riders will appreciate the liquid cooling system, which keeps the engine temperatures in check during extended rides, ensuring that the fun never has to stop. The 2005 KTM 640 LC4 Enduro features a meticulously engineered chassis designed to handle the rigors of off-road riding. The chromium-molybdenum frame is not only lightweight but also incredibly durable, providing a solid foundation for the bike's suspension system. The front suspension, featuring WP-USD 43 mm forks, offers exceptional performance and adjustability, while the rear WP monoshock with 335 mm of travel absorbs bumps and obstacles with ease. The bike's braking system is equally impressive, with 216 mm and 260 mm single discs for the front and rear, respectively, providing reliable stopping power when you need it most. With a seat height of 910 mm and a ground clearance of 300 mm, the 640 LC4 Enduro is built for maneuverability, allowing riders to navigate challenging terrains confidently. **

Pros

  • Powerful Engine Performance: The 625cc engine delivers thrilling torque and reliable acceleration, perfect for off-road adventures.
  • Robust Suspension: The advanced WP suspension system provides excellent handling and comfort over rough terrain.
  • Lightweight and Agile: Weighing in at just 148 kg (326.3 lbs), the bike is easy to maneuver, making it ideal for trail riding and technical sections.

Cons

  • Limited Availability: The KTM 640 LC4 Enduro was not available in the USA, restricting access for many enthusiasts.
  • Seat Height: With a seat height of 910 mm, it may not be suitable for shorter riders without modifications.
  • Maintenance Requirements: As a performance-oriented machine, it may require more frequent maintenance to keep it in optimal condition.

Technical details

Source specification data

Make
KTM
Model
640 LC4 Enduro
Category
Cross-motocross
Starter
Electric & kick
Comments
Not available in the USA.
Clutch
Wet multi-disc clutch, operated hydraulically
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
148.0 kg (326.3 pounds)
Seat Height
910 mm (35.8 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
300 mm (11.8 inches)
Rake
28.0°
Trail
128 mm (5.0 inches)
Frame Type
Chromium-molybdenum, powder-coated
Front Tyre
90/90-21
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP monoshock
Front Suspension
WP-USD 43 mm (1.89 inches)
Rear Wheel Travel
335 mm (13.2 inches)
Rear Brakes Diameter
260 mm (10.2 inches)
Front Brakes Diameter
216 mm (8.5 inches)