Adventure Motorcycles
2004KTM 640 LC4 Adventure
37 fields on record
The 2004 KTM 640 LC4 Adventure is a robust single-cylinder enduro designed for adventure touring and serious off-road exploration. Its torquey 625cc engine delivers strong low-end power ideal for technical terrain, while the liquid-cooled four-stroke provides reliable long-distance capability. Best suited for experienced riders seeking a lightweight, versatile dual-sport with genuine off-road credentials.
- Capacity
- 625.0 ccm
- Engine
- Single
- Gearbox
- 5-speed
- Dry weight
- 158.0 kg
- Seat height
- 945 mm
- Power
- 49.0 HP (36.5 kW) @ 7000 RPM
What’s new for the 2004 KTM 640 LC4 Adventure
vs the 2003| Spec | 2003 | 2004 |
|---|---|---|
| Power | 54.8 HP (40.3 kW) | 49.0 HP (36.5 kW) @ 7000 RPM |
| Front suspension | WP-USD 43 MA | WP-USD 48 MA |
| Front brakes | Single disc | Double disc |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A big-bore dual-sport built for long-distance off-road adventure riding and rugged terrain exploration with light touring capability.
- Built for
- A torquey, characterful thumper that rewards riders who enjoy raw mechanical feel over refinement and outright speed.
- Not ideal for
- Not ideal for shorter riders, pure pavement commuters, or anyone seeking smooth multi-cylinder refinement and high top-end power.
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
- 49.0 HP (36.5 kW) @ 7000 RPM
- Torque
- 55.0 Nm (5.6 kgf-m)
- Engine type
- Single
- Power/weight ratio
- 0.3101 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
- 945 mm
- Dry weight
- 158.0 kg
- Fuel capacity
- 28.00 litres
- Ground clearance
- 315 mm
Chassis & suspension
- Frame
- chromium-molybdenum, power-coated
- Front suspension
- WP-USD 48 MA
- Rear suspension
- WP - Monoshock
- Front wheel travel
- 270 mm
- Rear wheel travel
- 328 mm
- Rake (fork angle)
- 27.5°
- Trail
- 124 mm
Brakes & wheels
- Front brakes
- Double disc
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 90/90-21
- Rear tyre
- 140/80-18
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 |
|---|---|---|---|
| Capacity | 625 cc | 625 cc | 625 cc |
| Dry weight | 158 kg | 158 kg | 158 kg |
| Seat height | 945 mm | 945 mm | 945 mm |
| Fuel capacity | 28 L | 28 L | 25.5 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 Adventure?
The 2004 KTM 640 LC4 Adventure has a Capacity of 625.0 ccm (38.14 cubic inches).
What engine power does the KTM 640 LC4 Adventure have?
The 2004 KTM 640 LC4 Adventure has a Power of 49.0 HP (36.5 kW) @ 7000 RPM.
How many gears does the KTM 640 LC4 Adventure have?
The 2004 KTM 640 LC4 Adventure has a Gearbox of 5-speed.
What is the torque of the KTM 640 LC4 Adventure?
The 2004 KTM 640 LC4 Adventure has a Torque of 55.0 Nm (5.6 kgf-m or 40.6 ft.lbs).
How much does the KTM 640 LC4 Adventure weigh?
The 2004 KTM 640 LC4 Adventure has a Dry weight of 158.0 kg (348.3 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.