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2005 KTM 640 LC4 Enduro

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

OIL CIRCUIT

Experience from racing: a second oil injection nozzle now cools the pistons from below too, making the engine even more dependable.

IGNITION

A new ignition program map provides optimized combustion. A "low octane" program map can be activated for low-octane fuel (up to 80 octane).

VALVE TIMING

A new camshaft with quicker valve timing offers a more spontaneous progression of power and even better performance.

INDICATORS

New indicators, now with smaller, orange glass and a longer operati-onal life

CHAIN

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 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 - 151010mm (59.450.39")
  • 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)