KTM 640 LC4 Supermoto (1999-00)

The KTM 640 LC4 Supermoto is a street-legal motorcycle with a 624.6cc engine, producing a max power of 35.7 kW at 7500 rpm and max torque of 52 Nm at 5500 rpm. It has a four-stroke, single-cylinder engine with SOHC and four valves per cylinder. The compression ratio is 11.0:1, and the bike has a liquid-cooled cooling system. The induction system is Mikuni BST 40, and the ignition is a contactless DC-CDI ignition with a digital advanced system. The bike has both kick and electric start options. The clutch is wet and multiplate, and the transmission is a five-speed, claw-shifted gearbox with a primary drive ratio of 30:81. The frame is a central chrome-moly-steel frame, and the front suspension has 43mm WP upside-down forks with 270mm front wheel travel. The rear suspension has a central shock absorber with a PRO-LEVER linkage to the rear-swingarm with needle bearing, giving 300mm of rear wheel travel. The bike has single 320mm front and 220mm rear discs with four-piston and one-piston floating calipers, respectively. The bike sits on a 120/70-17 front and 160/60-17 rear tire with a steering head angle of 62.5o. The wheelbase is 1510mm, and the ground clearance is 335mm. The seat height is 915mm, and it has a dry weight of 137kg. The fuel capacity is 11L with a 2.5L reserve, and it has a GVWR of 350kg. The manual for the KTM 640 LC4 Supermoto (1999-00) is available online.

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Technical specifications:

Make Model: KTM 640 LC4 Supermoto

Year: 1999 – 00

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: 17:42

Final Drive: Chain 5/8 x 1/4″ O-ring

Frame: Central chrome-moly-steel frame

Front Suspension: 43 mm WP upside-down forks

Front Wheel Travel: 270 mm / 10.6 in

Rear Suspension: Central shock absorber (WP) with PRO-LEVER linkage to rear-swingarm with needle bearing

Rear Wheel Travel: 300 mm / 11.8 in

Front Brakes: Single 320 mm disc, 4piston floating caliper

Rear Brakes: Single 220 mm disc, 1 piston floating caliper

Front Tyre: 120/70 – 17

Rear Tyre: 160/60 – 17

Steering Head Angle: 62.5o

Wheelbase: 1510 mm / 59.4 in

Ground Clearance: 335 mm / 13.2 in

Seat Height: 915 mm / 36.0 in

Dry Weight: 137 kg / 302 lbs

GVWR: 350 kg / 773 lbs

Fuel Capacity: 11 L / 2.9 US gal / 2.4 Imp gal

Fuel Reserve: 2.5 L / 2.6 US qt / 2.2 Imp qt

Manual: blackbears.ru