KTM 640 LC4 Adventure R (2001-02)

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The KTM 640 LC4 Adventure R motorcycle was produced in 2001-02 and had a four-stroke, single cylinder engine with a capacity of 624.6 cc. It had a compression ratio of 11.0:1 and was liquid cooled, with a Mikuni BST 40 induction system and a contactless DC-CDI ignition. The bike had a maximum power output of 35.7 kW/49 hp at 7500 rpm and maximum torque of 52 Nm/38.4 lb-ft at 5500 rpm. The transmission was a five-speed, claw-shifted system with a wet, multiplate clutch. The primary drive ratio was 30:81, and the final drive was a chain with a ratio of 16:40. The central chrome-moly-steel frame was supported by 50 mm WP upside-down forks and a WP monoshock. The front and rear brakes were single 300mm and 220mm discs, respectively. The front and rear tires were 90/90-21 and 140/80-18 Enduro 3, respectively, and the bike had a steering head angle of 62.5o. The wheelbase measured 1510 mm, and the ground clearance was 320 mm. The bike’s dry weight was 154 kg, and the fuel capacity was 28 L with a reserve of 3.8 L.

Technical specifications:

Make Model: KTM 640 LC4 Adventure

Year: 2001 – 02


Engine: Four stroke, single Cylinder. SOHC, 4 Valve per cylinder,
Capacity: 624.6 cc / 38.1 cu in
Bore x Stroke: 101 x 78 mm
Compression Ratio: 11.0:1
Cooling System: Liquid cooled
Induction: Mikuni BST 40
Ignition: Contactless DC-CDI ignition with digital advanced system, KOKUSAN
Spark Plug: NGK DPR8 EA-9
Battery: 12V 8Ah, maintenance free
Starting: Kick & electric
Max Power: 35.7 kW / 49 hp @ 7500 rpm
Max Torque: 52 Nm / 5.3 kgf-m / 38.4 lb-ft @ 5500 rpm
Clutch: Wet, multiplate
Transmission: 5 Speed, claw shifted
Primary Drive Ratio: 30:81

Gear Ratios: 1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18
Final Drive Ratio: 16:40
Final Drive: Chain
Frame: Central chrome-moly-steel frame
Front Suspension: 50 mm WP upside-down forks
Front Wheel Travel: 300 mm / 11.8 in
Rear Suspension: WP monoshock
Rear Wheel Travel: 320 mm / 12.6 in
Front Brakes: Single 300mm disc, 4piston floating caliper
Rear Brakes: Single 220mm disc, 1 piston floating caliper
Front Tyre: 90/90 – 21 54S Enduro 3
Rear Tyre: 140/80 – 18 70R Enduro 3
Steering Head Angle: 62.5o
Wheelbase: 1510 mm / 59.4 in
Ground Clearance: 320 mm / 12.6 in
Seat Height: 945 mm / 37.2 in
Dry Weight: 154 kg / 340 lbs
GVWR: 380 kg / 839 lbs
Fuel Capacity: 28 L / 7.4 US gal / 6.2 Imp gal
Fuel Reserve: 3.8 L / 1.0 US gal / 0.8 Imp gal

Manual: blackbears.ru

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