Enduro Bikes
2003KTM 640 LC4 Enduro
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The 2003 KTM 640 LC4 Enduro is a single-cylinder four-stroke designed for serious off-road riders seeking a lightweight, versatile machine. Its 625cc liquid-cooled engine delivers strong low-end torque ideal for technical terrain, while the robust LC4 platform is renowned for reliability and simplicity. This model excels as a capable adventure and enduro bike for experienced riders tackling challenging trails and long-distance off-road journeys.
- Capacity
- 625.0 ccm
- Engine
- Single
- Gearbox
- 5-speed
- Dry weight
- 149.0 kg
- Seat height
- 925 mm
- Power
- 54.8 HP (40.3 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily as a serious enduro machine for trails, gravel, and technical terrain, with occasional road use as a secondary role.
- Built for
- A raw, torquey single-cylinder enduro with a lively, physical riding experience and minimal creature comforts.
- Not ideal for
- Not a good fit for riders wanting a smooth, comfortable highway tourer or a low, easy-to-handle commuter bike.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 625.0 ccm
- Power
- 54.8 HP (40.3 kW)
- Torque
- 55.0 Nm (5.6 kgf-m)
- Engine type
- Single
- Power/weight ratio
- 0.3678 HP/kg (dry)
- Bore x stroke
- 101.0 x 78.0 mm
- Compression
- 11.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric & kick
- Ignition
- Kokusan DC-CDI
- Valves per cylinder
- 4
- Lubrication system
- Pressure lubrication with 2 Eaton pumps
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc clutch, operated hydraulically
Dimensions & weight
- Wheelbase
- 1510 mm
- Overall width
- 640 mm
- Seat height
- 925 mm
- Dry weight
- 149.0 kg
- Wet weight
- 158.0 kg
- Fuel capacity
- 12.00 litres
- Ground clearance
- 310 mm
- Reserve fuel capacity
- 2.50 litres
Chassis & suspension
- Frame
- Chromium-molybdenum, power-coated
- Front suspension
- WP-USD 43 MA
- Rear suspension
- WP - Monoshock
- Front wheel travel
- 275 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 28.0°
- Trail
- 128 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 90/90-21
- Rear tyre
- 130/80-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2003 | 2004 | 2005 | 2006 | 2007 |
|---|---|---|---|---|---|
| Capacity | 625 cc | 625 cc | 625 cc | 625 cc | 625 cc |
| Dry weight | 149 kg | 149 kg | 148 kg | 148 kg | 148 kg |
| Seat height | 925 mm | 925 mm | 910 mm | 910 mm | 910 mm |
| Fuel capacity | 12 L | 12 L | 11.2 L | 11.2 L | 11.2 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 640 LC4 Enduro?
The 2003 KTM 640 LC4 Enduro has a Capacity of 625.0 ccm (38.14 cubic inches).
What engine power does the KTM 640 LC4 Enduro have?
The 2003 KTM 640 LC4 Enduro has a Power of 54.8 HP (40.3 kW).
How many gears does the KTM 640 LC4 Enduro have?
The 2003 KTM 640 LC4 Enduro has a Gearbox of 5-speed.
What is the torque of the KTM 640 LC4 Enduro?
The 2003 KTM 640 LC4 Enduro has a Torque of 55.0 Nm (5.6 kgf-m or 40.6 ft.lbs).
How much does the KTM 640 LC4 Enduro weigh?
The 2003 KTM 640 LC4 Enduro has a Dry weight of 149.0 kg (328.5 pounds).
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