Key performance
Technical specifications
No spec differences between these two model years.
Engine
- Displacement
- 625 cc
- Power
- 55.0 ch @ 7000 tr/min (40.5 kW)
- Torque
- 56.9 Nm @ 5500 tr/min
- Engine type
- Monocylindre, 4 temps
- Cooling
- liquide
- Compression ratio
- 11.5 : 1
- Bore × stroke
- 101 x 78 mm
- Valves/cylinder
- 4
- Camshafts
- 1 ACT
Chassis
- Frame
- simple berceau dédoublé en acier
- Gearbox
- boîte à 5 rapports
- Final drive
- Chaîne
- Front suspension
- Fourche téléhydraulique inversée WP Ø 48 mm, déb : 275 mm
- Rear suspension
- Mono-amortisseur WP, déb : 300 mm
Brakes
- Front brakes
- Freinage 1 disque Ø 300 mm, étrier 4 pistons
- Rear brakes
- Freinage 1 disque Ø 220 mm, étrier simple piston
- Front tyre
- 90/90-21
- Rear tyre
- 140/80-18
Dimensions
- Seat height
- 945.00 mm
- Fuel capacity
- 28.00 L
- Dry weight
- 154.00 kg
- New price
- 8 719 €
Overview
Who, in the year 2000, could claim to take you from Paris to Dakar without flinching, then bring you back to the office on Monday morning? KTM had a ready-made answer with its LC4-E 640 Adventure, a machine born in the direct wake of the motorcycles that devoured the African desert in competition. And it shows. You can feel it, even, from the very first glance at that tall, perched silhouette, that 28-liter tank built for range, and those WP suspensions with generous travel: 275 mm up front, 300 mm at the rear. This is a far cry from a tamed adventure bike meant for the Paris ring road.

The heart of the beast is a four-stroke single-cylinder displacing 625 cc, fed by four valves and running a compression ratio of 11.5:1. On paper, 55 horsepower at 7,000 rpm and 56.9 Nm of torque at 5,500 rpm don't exactly set the world on fire compared to a BMW F 650 GS or a Honda Transalp from the same era. Except KTM played a different card: lightweight construction. At 154 kg dry, the 640 Adventure barely weighs more than a large enduro. That power-to-weight ratio changes everything. The Austrian single doesn't lack punch when asked to pull through torn-up trails or get back on the gas out of a corner on tarmac. The five-speed gearbox gets the job done without any frills, and the chain drive remains a logical choice for a machine designed with off-road in mind.
On the chassis side, the steel split single-cradle frame takes abuse without batting an eye. The 48 mm WP inverted fork inspires confidence as soon as the terrain deteriorates, and the rear mono-shock offers suspension comfort that many road-biased adventure bikes of the era could only envy. The braking system — a 300 mm disc gripped by a four-piston caliper up front and a 220 mm disc at the rear — proves adequate for the intended program. The 90/90-21 front and 140/80-18 rear tires confirm the dual-purpose mission, with a clear advantage for off-road use. The seat, perched at 945 mm, demands a minimum inseam length. Shorter riders will either move along or invest in having the foam shaved down.
On the road, the 640 Adventure turns out to be more versatile than you might expect. Its top speed of 165 km/h lets it hold its own on the highway without straining, and the fairing provides decent wind protection for a trail bike of this generation. The standing riding position, natural and well thought out, allows long off-road stints without ending up broken in half. This is a machine that invites you to strap on two panniers and point the handlebars south without overthinking it. It's aimed at adventurers, long-distance travelers, those who want a motorcycle capable of riding where the road ends.
Then there's the question of price. At 8,719 euros in 2000, the bill stung a little for a single-cylinder. But the quality of the WP components, the overall ruggedness, and the adventure credentials of the machine justified the investment. Against the competition — more comfortable on road but far less credible once the pavement disappears — the KTM 640 Adventure was in a class of its own. A true rally raid machine, usable as a daily rider. Not the other way around.
Practical info
- La moto est accessible aux permis : A
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