KTM 640 LC4 Enduro

 

 

 

Make Model.

KTM 640 LC4 Enduro

Year

2001 - 02

Engine

Four stroke, single Cylinder. SOHC, 4 valves, engine balancer

Capacity

624.6 cc / 38.1 cu in
Bore x Stroke 101 x 78 mm
Compression Ratio 11.5:1
Cooling System Liquid cooled
Lubrication 2 x Eaten oil pumps

Induction

Mikuni BST 40 carburetor

Ignition

Kokusan contactless DC-CDI ignition with advanced system

Starting

Electric & kick

Spark Plug

NGK DRBEACPR 8 E

Battery

12V 8Ah, maintenance free

Max Power

40.1 kW / 55 hp @ 7000 rpm

Max Torque

55 Nm / 5.6 kgf-m / 40.6 lb-ft @ 5500 rpm

Clutch

Multi-disc in oil bath

Transmission

5 Speed

Primary Drive Ratio

30:81, straight cut gears

Gear Ratios

1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18

Final Drive Ratio

17:38

Final Drive

Chain, O-ring 5/8 x 1/4"

Frame

Central chrome-moly steel frame

Front Suspension

White Power – Up Side Down 4357 MXMA fork

Front Wheel Travel

280 mm / 11.0 in

Rear Suspension

Central shock absorber (WP BAVP3612) with PRO-LEVER linkage to rear- swing-arm with needle bearing

Rear Wheel Travel

320 mm / 12.6 in

Front Brakes

Single 300 mm disc, 4 piston caliper

Rear Brakes

Single 220 mm disc, 1 piston caliper

Front Tyre

90/90 - 21

Rear Tyre

140/80 - 18

Steering Head Angle

62o

Wheelbase

1510 mm / 59.4 in

Ground Clearance

310mm / 12.2 in

Seat Height

930 mm / 36.6 in

Wet Weight

158 kg / 348 lbs

GVWR

350 / 773 lbs

Engine Oil Capacity 

2.1 L / 2.2 US qt / 1.8 Imp qt

Fuel Capacity 

12 L / 3.2 US gal / 2.6 Imp gal

Consumption Average

4.7 sec

Top Speed

168 km/h / 104 mph

KTM's LC4 range includes three variations - a Supermoto-styled machine, an enduro spec competition bike and a Paris-Dakar replica desert racer.

All three used the same single-cylinder four-stroke 609cc engine, but the latest versions use the uprated 625cc engine, confusingly called the 640 range. The Enduro follows a similar route to the firm's EXC range, with wire-spoked wheels wearing off-road tyres and a small Brembo front brake disc. The strong power delivery of the single-cylinder engine and the high-quality suspension and brakes is a devastating package in the hands of an experienced rider.

A small fuel tank and constant vibration from the single-cylinder engine means the LC4 is rather impractical on the road.