Built around KTM's enduro - offroad motorcycle platform, the 2006 KTM 640 LC4 Enduro features a 625 cc (38.1 cu in) liquid-cooled single cylinder, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 101.0 x 78.0 mm (4.0 x 3.1 inches) with a 11.7:1 compression ratio.
On the scales, the 640 LC4 Enduro measures 148 kg (326 lbs) dry. Rider ergonomics and chassis geometry center around a 910 mm (35.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,510 mm (59.4 in) wheelbase engineered for balanced agility and highway composure. The 11.2-liter (3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's KTM archive, this model family spans 5 indexed model years from 2003 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
910 mm (35.8 in)
Engine
Displacement625.0 ccm (38.14 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression11.7:1
Bore x Stroke101.0 x 78.0 mm (4.0 x 3.1 inches)
Valves/Cylinder4
Fuel SystemCarburettor. Mikuni BST 40
Fuel ControlOverhead Cams (OHC)
IgnitionKokusan DC-CDI
LubricationPressure lubrication with 2 Eaton pumps
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
