2005 KTM 640 LC4 Enduro
It was with this bike that many years ago KTM first coined the phrase "Hard Enduro". And after almost exactly as many years
development, the 640 LC4 in its current form is still the
embodiment of sporty all-rounders: powerful but cultivated,razor-sharp but reliable, and always there for one or two quick curves.
625 SXC/640 LC4 ENDURO
Experience from racing: a second oil injection nozzle now cools the pistons from below too, making the engine even more dependable.
A new ignition program map provides optimized combustion. A "low octane" program map can be activated for low-octane fuel (up to 80 octane).
A new camshaft with quicker valve timing offers a more spontaneous progression of power and even better performance.
New indicators, now with smaller, orange glass and a longer operati-onal life
An X-ring endless chain (without a connecting link) eliminates the risk posed by the weakest link, i.e. the connecting link, which is al-ways subject to the most wear.
New graphic design, with the KTM lettering featuring a silver shadow.
Engine - single-cylinder 4-stroke engine
Displacement - 625
Bore x stroke - 101 x 78 (3.98 x 3.07")
Compression - 11.7:1
Starter - E-starter and kickstarter
Transmission - 5 gears, dog-clutch engagement
Carburetor - Mikuni BST 40
Control - 4 valves / OHC, roller rocker lever
Lubrication - Pressure lubrication with 2 Eaton pumps
Engine oil - 2.1 l Motorex Power Synt 4T 10W50
Primary ratio - 31:79
Final drive - X-ring chain 5/8 x 1/4"
Cooling - liquid cooled
Clutch - wet multi-disc clutch, operated hydraulically
Ignition - Kokusan DC-CDI
Frame - chromium-molybdenum, powder-coated
Subframe - chromium-molybdenum, powder-coated
Handlebar - Magura, tapered, aluminum Ø 28 mm (1.10")
Front suspension - WP-USD 43 mm (1.89")
Rear suspension - WP Monoshock
Suspension travel - front/rear 275/275 mm (10.83/10.83")
Front/Rear brakes - 300/220 mm (11.81/8.66")
Front/rear rims - 1.60 x 21" / 2.15 x 18" DID
Front/rear tires - 90/90-21" ; 130/80-18"
Transmission - 16:42
Main silencer - aluminum
Steering head angle - 62°
Wheel caster - 128 mm (5.04")
Wheelbase - 1510±10mm (59.45±0.39")
Ground clearance (unloaded) - 300 mm (11.81")
Seat height - 910 mm (35.83")
Fuel tank contents in litres - approx. 11.2 l (2.96 gal)
Total weight in kgs (without fuel) - approx. 148 kg (326.3 lbs)