
KTM 640 LC4 Adventure
Key specifications
Overview
Introducing the 2003 KTM 640 LC4 Adventure, a motorcycle that embodies the spirit of rugged exploration and off-road prowess. Positioned within the Enduro-offroad category, this bike is not just a machine; it's a ticket to adventure, whether you're traversing rocky mountain trails or cruising through remote landscapes. KTM has long been synonymous with adventure biking, and the 640 LC4 Adventure epitomizes this ethos, delivering a perfect blend of power, agility, and durability. With its striking design and signature orange livery, this bike commands attention and respect on any terrain. At the heart of the KTM 640 LC4 Adventure lies a robust 625cc single-cylinder, four-stroke engine that churns out an exhilarating 54.80 horsepower at 7,000 RPM and a formidable torque of 55.00 Nm at 5,500 RPM. This impressive power-to-weight ratio, at 0.3468 HP/kg, translates to thrilling acceleration and responsiveness, making every twist of the throttle a rush of excitement. The liquid-cooled engine is paired with a 5-speed gearbox and a reliable chain final drive, ensuring smooth gear transitions and optimal performance on diverse terrains. Whether you're climbing steep inclines or navigating challenging descents, the 640 LC4 Adventure delivers a thrilling riding experience that will keep you coming back for more. KTM has equipped the 640 LC4 Adventure with a host of features designed to enhance both comfort and performance. The bike boasts a durable WP-USD 43 MA front suspension with an impressive travel of 270 mm, coupled with a WP Monoshock rear suspension offering 320 mm of travel. This suspension setup not only absorbs bumps with ease but also contributes to the bike’s excellent handling characteristics. The robust braking system, featuring a 320 mm single disc up front and a 220 mm disc at the rear, provides reliable stopping power, instilling confidence in both hard and technical braking situations. With a fuel capacity of 28 liters, the KTM is built for the adventurous rider, allowing for longer excursions without frequent stops. **
Pros
- Powerful Engine Performance: The single-cylinder, four-stroke engine provides excellent torque and acceleration, making it ideal for off-road adventures.
- Robust Suspension: With long travel suspension at both ends, the bike excels in absorbing rough terrain, enhancing rider comfort and control.
- Adventure-Ready Design: The large fuel tank and high ground clearance make it perfect for long-distance rides and tackling challenging trails.
Cons
- Seat Height: At 945 mm, the seat height may be challenging for shorter riders to manage comfortably.
- Weight: Weighing in at 158 kg (348.3 lbs), it may feel cumbersome for those not accustomed to handling heavier off-road bikes.
- Basic Fuel System: The carburettor fuel system, while reliable, may not offer the same efficiency and performance as modern fuel-injected systems.
Technical details
Source specification data
- Make
- KTM
- Model
- 640 LC4 Adventure
- Category
- Enduro-offroad
- Power
- 54.80 HP (40.0 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
- 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
- 28.00 litres (7.40 gallons)
- Ground Clearance
- 315 mm (12.4 inches)
- Power Weight Ratio
- 0.3468 HP/kg
- Reserve Fuel Capacity
- 3.50 litres (0.92 gallons)
- Rear Tyre
- 140/80-18
- Front Tyre
- 90/90-21
- Rear Brakes
- Single disc
- Front Brakes
- Single disc
- Rear Suspension
- WP - Monoshock
- Front Suspension
- WP-USD 43 MA
- 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)