What category is the 2006 KTM 640 Adventure?

The 2006 KTM 640 Adventure has a Category of Enduro / offroad.

What is the engine size of the 2006 KTM 640 Adventure?

The 2006 KTM 640 Adventure has a Capacity: of 625.00 ccm (38.14 cubic inches).

What type of engine does the 2006 KTM 640 Adventure have?

The 2006 KTM 640 Adventure has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2006 KTM 640 Adventure?

The 2006 KTM 640 Adventure has a Power of 53.64.

What is the torque of the 2006 KTM 640 Adventure?

The 2006 KTM 640 Adventure has a Torque of 55.00 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5500.

Is the 2006 KTM 640 Adventure air cooled or liquid cooled?

The 2006 KTM 640 Adventure has a Cooling system of Liquid.

How many gears does the 2006 KTM 640 Adventure have?

The 2006 KTM 640 Adventure has a Gearbox of 5-speed.

How much does the 2006 KTM 640 Adventure weigh?

The 2006 KTM 640 Adventure has a Dry weight of 158.0 kg (348.3 pounds).

What is the seat height of the 2006 KTM 640 Adventure?

The 2006 KTM 640 Adventure has a Seat height of 945 mm (37.2 inches) If adjustable, lowest setting..

KTM 640 Adventure - 2006 Specifications and Reviews

Name: 2006 KTM 640 Adventure
Brand: KTM

The 2006 KTM 640 Adventure is a capable single-cylinder enduro bike designed for adventure riders seeking lightweight, fuel-efficient off-road performance. Its 625cc four-stroke engine delivers strong low-end torque ideal for rough terrain and long-distance exploration. Known for reliability and easy maintenance, the 640 Adventure remains a popular choice for dual-sport touring and backcountry riding.

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General information
Category	Enduro / offroad
Year	2006
Model	KTM 640 Adventure

Engine and Transmission Specifications
Exhaust system	Premium steel HGS 4
Clutch	Wet multi-disc clutch, operated hydraulically
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Lubrication system	Pressure lubrication with 2 Eaton pumps
Ignition	Kokusan DC-CDI
Fuel control	OHC
Fuel system	Carburettor. Mikuni BST 40
Valves per cylinder	4
Bore x stroke	101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression	11.7:1
Torque	55.00 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5500
Power	53.64
Engine type	Single cylinder, four-stroke
Capacity:	625.00 ccm (38.14 cubic inches)

Brakes, suspension, Frame and wheels
Rear brakes diameter	220 mm (8.7 inches)
Rear brakes	Single disc
Front brakes diameter	300 mm (11.8 inches)
Front brakes	Double disc
Rear tyre dimensions	140/80-18
Front tyre dimensions	90/90-21
Rear suspension travel	335 mm (13.2 inches)
Rear suspension	WP - Monoshock
Front suspension travel	300 mm (11.8 inches)
Front suspension	WP-USD 48 mm
Trail	124 mm (4.9 inches)
Rake (fork angle)	27.5°
Frame type	Chromium-molybdenum, powder-coated
Physical measures and capacities
Fuel capacity	25.50 litres (6.74 gallons)
Wheelbase	1,510 mm (59.4 inches)
Ground clearance	315 mm (12.4 inches)
Overall width	640 mm (25.2 inches)
Seat height	945 mm (37.2 inches) If adjustable, lowest setting.
Power/weight ratio	0.3395 HP/kg
Dry weight	158.0 kg (348.3 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Starter	Electric & kick

Performance Profile & Rider Fit

53.6 hp

Peak Power

5.5s

0-60 mph

Best For

Track25%

City45%

Cornering65%

Daily Riding50%

Touring65%

Passenger30%

Rider Profile

Best For	Best suited to intermediate to experienced riders comfortable with a tall, lightweight big-single that rewards active riding.
Purpose	A rugged, big-bore enduro built for long-distance off-road adventure, desert rallies, and mixed-terrain touring rather than outright speed.
Rider Fit	The tall 945mm seat height and 158kg dry weight demand decent rider height, fitness, and confidence balancing the bike standing up off-road.
Character	A torquey, no-nonsense thumper with rally-bred DNA, favoring simplicity, durability, and long-travel suspension over refinement or outright power.
Not Ideal For	Not ideal for shorter riders, pure pavement commuters wanting plush comfort, or anyone seeking sportbike acceleration and top speed.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2006 KTM 640 Adventure Rider Ergonomics Assessment

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Inseam (optional)

Units

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Feet:

At 945mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2006 KTM 640 Adventure, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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