What category is the 2005 KTM 640 LC4 Adventure?

The 2005 KTM 640 LC4 Adventure has a Category of Enduro / offroad.

What is the engine size of the 2005 KTM 640 LC4 Adventure?

The 2005 KTM 640 LC4 Adventure has a Capacity: of 625.00 ccm (38.14 cubic inches).

What type of engine does the 2005 KTM 640 LC4 Adventure have?

The 2005 KTM 640 LC4 Adventure has a Engine type of Single cylinder.

What is the engine power of the 2005 KTM 640 LC4 Adventure?

The 2005 KTM 640 LC4 Adventure has a Power of 53.64.

What is the torque of the 2005 KTM 640 LC4 Adventure?

The 2005 KTM 640 LC4 Adventure has a Torque of 55.00.

Is the 2005 KTM 640 LC4 Adventure air cooled or liquid cooled?

The 2005 KTM 640 LC4 Adventure has a Cooling system of Liquid.

How many gears does the 2005 KTM 640 LC4 Adventure have?

The 2005 KTM 640 LC4 Adventure has a Gearbox of 5-speed.

How much does the 2005 KTM 640 LC4 Adventure weigh?

The 2005 KTM 640 LC4 Adventure has a Dry weight of 158.0 kg (348.3 pounds).

What is the seat height of the 2005 KTM 640 LC4 Adventure?

The 2005 KTM 640 LC4 Adventure has a Seat height of 945 mm (37.2 inches) If adjustable, lowest setting..

KTM 640 LC4 Adventure - 2005 Specifications and Reviews

The 2005 KTM 640 LC4 Adventure is a rugged single-cylinder enduro bike designed for adventurous riders seeking off-road capability and long-distance touring. Its torquey 625cc engine delivers strong low-end grunt ideal for challenging terrain, while the lightweight chassis and proven reliability make it a favorite for expedition riding and remote exploration.

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General information
Category	Enduro / offroad
Year	2005
Model	KTM 640 LC4 Adventure
Engine and Transmission Specifications
Clutch	Wet multi-disc clutch, operated hydraulically
Transmission typefinal drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Lubrication system	Pressure lubrication with 2 Eaton pumps
Starter	Electric & kick
Ignition	Kokusan DC-CDI
Fuel control	OHC
Valves per cylinder	4
Fuel system	Carburettor. Mikuni BST 40
Bore x stroke	101.0 x 78.0 mm (4.0 x 3.1 inches)
Compression	11.7:1
Torque	55.00
Power	53.64
Stroke	4
Engine type	Single cylinder
Capacity:	625.00 ccm (38.14 cubic inches)

Physical measures and capacities
Wheelbase	1,510 mm (59.4 inches)
Ground clearance	315 mm (12.4 inches)
Overall width	640 mm (25.2 inches)
Overall height	640 mm (25.2 inches)
Seat height	945 mm (37.2 inches) If adjustable, lowest setting.
Dry weight	158.0 kg (348.3 pounds)
KTM 640 LC4 Adventure dimensions and frame
Rear brakes diameter	220 mm (8.7 inches)
Rear brakes	Single disc
Front brakes diameter	300 mm (11.8 inches)
Front brakes	Double disc
Front tyre dimensions	90/90-21
Rear suspension travel	335 mm (13.2 inches)
Rear suspension	WP - Monoshock
Front suspension	WP-USD 48 mm
Trail	124 mm (4.9 inches)
Rake (fork angle)	27.5°
Frame type	Chromium-molybdenum, power-coated
Speed and acceleration
Power/weight ratio	0.3395 HP/kg
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	25.50 litres (6.74 gallons)

Performance Profile & Rider Fit

53.6 hp

Peak Power

5.8s

0-60 mph

Best For

Track25%

City45%

Cornering60%

Daily Riding50%

Touring65%

Passenger35%

Rider Profile

Best For	Best suited to intermediate-to-experienced riders comfortable with a tall, top-heavy single-cylinder adventure bike.
Purpose	A big-bore dual-sport built for long-distance off-road adventure riding and rugged terrain exploration with light touring capability.
Rider Fit	The tall 945mm seat height and 158kg dry weight demand decent rider height and strength, especially in technical off-road situations.
Character	A torquey, characterful thumper that rewards riders who enjoy raw mechanical feel over refinement and outright speed.
Not Ideal For	Not ideal for shorter riders, pure pavement commuters, or anyone seeking smooth multi-cylinder refinement and high top-end power.

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

Rider Fit Visualizer

2005 KTM 640 LC4 Adventure Rider Ergonomics Assessment

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Inseam (optional)

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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 2005 KTM 640 LC4 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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