KTM LC4 Adventure 640
2001Off-road

KTM LC4 Adventure 640

Key specifications

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

Overview

Introducing the 2001 KTM LC4 Adventure 640, a remarkable entry in the world of enduro-offroad motorcycles that perfectly balances rugged adventure with spirited performance. KTM, renowned for its off-road pedigree, designed the LC4 Adventure as a versatile machine capable of tackling everything from rocky trails to long highway stretches. With its striking orange and black aesthetics and a utilitarian build, this bike not only stands out visually but also commands respect in the dirt, making it a favorite among dual-sport enthusiasts. At the heart of the LC4 Adventure 640 lies a robust 625cc single-cylinder, four-stroke engine, delivering a thrilling 49 horsepower at 7500 RPM and an impressive torque of 52 Nm at 5500 RPM. This powertrain is engineered to provide exhilarating acceleration while still maintaining the reliability that KTM is known for. The bike’s top speed of 165 km/h (102.5 mph) makes it more than capable of keeping up with highway traffic, while the 5-speed gearbox ensures smooth shifting across various terrains. The bike’s lightweight design at just 154 kg (339.5 lbs) contributes to its agile handling, allowing riders to navigate tight corners and steep inclines with confidence and ease. The 2001 LC4 Adventure 640 is packed with features that cater to the adventurous spirit. The suspension setup is designed for serious off-road capability, with 270 mm of front travel and a staggering 320 mm in the rear, ensuring that the bike can absorb bumps and obstacles with minimal fuss. The braking system is equally impressive, featuring a single disc setup in both front and rear, providing ample stopping power with a 320 mm front disc that inspires confidence on descents. With a generous fuel capacity of 28 liters (7.40 gallons), riders can embark on longer journeys without the constant worry of running low on fuel, making it an ideal companion for extended explorations. **

Pros

  • Powerful Engine Performance: The 625cc engine offers robust power and torque, ideal for both off-road adventures and highway cruising.
  • Excellent Suspension Travel: With 270 mm front and 320 mm rear travel, the LC4 Adventure 640 excels in absorbing rough terrain, enhancing rider comfort on long rides.
  • Lightweight and Agile: Weighing in at only 154 kg, this motorcycle delivers nimble handling, making it easy to maneuver through tight trails and urban environments.

Cons

  • High Seat Height: At 935 mm, the seat height might be challenging for shorter riders, potentially limiting accessibility for some.
  • Basic Technology: The LC4 Adventure 640 features a carburettor fuel system, which may not provide the same efficiency and performance tuning as modern fuel-injected counterparts.
  • Single Disc Brakes: While effective, the single disc braking system may lack the stopping power preferred by some riders, especially in high-speed scenarios or during aggressive riding.

Technical details

Source specification data

Make
KTM
Model
LC4 Adventure 640
Category
Enduro-offroad
Power
49.00 HP (35.8 kW)) @ 7500 RPM
Torque
52.00 Nm (5.3 kgf-m or 38.4 ft.lbs) @ 5500 RPM
Gearbox
5-speed
Top Speed
165.0 km/h (102.5 mph)
Fuel System
Carburettor
Bore X Stroke
101.0 x 78.0 mm (4.0 x 3.1 inches)
Displacement
625.00 ccm (38.14 cubic inches)
Engine Details
Single cylinder, four-stroke
Valves Per Cylinder
4
Transmission Type Final Drive
Chain
Dry Weight
154.0 kg (339.5 pounds)
Seat Height
935 mm (36.8 inches) If adjustable, lowest setting.
Fuel Capacity
28.00 litres (7.40 gallons)
Power Weight Ratio
0.3182 HP/kg
Rear Tyre
140/80-18
Front Tyre
90/90-21
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Wheel Travel
320 mm (12.6 inches)
Front Wheel Travel
270 mm (10.6 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
320 mm (12.6 inches)