KTM 640 LC4 Supercomp (1999)

KTM 640 LC4 Supercomp (1999)

At the forefront of the adventure bike revolution, the KTM 640 LC4 Superenduro boasts an impressively robust 640cc four-stroke engine. A single cylinder SOHC design with 4 valves and an engine balancer ensures a smooth power delivery, ideal for both on- and off-road excursions.

The LC4 engine’s inherent character is that of a smooth, torque-rich powerplant, capable of effortlessly cruising the twisties one minute, and tackling the toughest trails the next.

With its potent blend of power and agility, the KTM 640 LC4 Superenduro is poised to conquer even the most daunting terrain with confidence and poise, leaving you to revel in the sheer joy of the ride.

Key Specifications

Engine TypeFour stroke, single Cylinder. SOHC, 4 valves, engine balancer
Engine Capacity624.6 cc / 38.1 cu in
Max Power40.1 kw / 55 hp
Max Torque55Nm / 5.6 kgf-m / 40.6 lb-ft @ 5500 rpm
Fuel Tank Capacity11L/ 2.9 US gal / 2.3 Imp gal
Seat Height36.4 inches / 925 mm
KTM 640 LC4 Supercomp (1999)

All Specifications

Make & Model

ModelKTM 640 LC4 Supercomp
Year1999

Engine

Engine TypeFour stroke, single Cylinder. SOHC, 4 valves, engine balancer
Displacement624.6 cc / 38.1 cu in
Bore x Stroke101 x 78 mm
Compression Ratio11.5:1
Max Horsepower40.1 kw / 55 hp
Max Torque55Nm / 5.6 kgf-m / 40.6 lb-ft @ 5500 rpm
Engine Management SystemMikuni BST 40 carburetor
Lubrication System2 x Eaten oil pumps
Cooling SystemLiquid cooled

Performance

Top Speedn/a

Transmission

ClutchMulti-disc in oil bath
Gearbox5 Speed
Primary Drive Ratio30:81, straight cut gears
Gear Ratios1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18
Final DriveChain, O-ring 5/8 x 1/4″

Electrical & Electronics System

Battery12V 8Ah, maintenance free
StarterElectric & kick

Chassis & Suspension

Frame TypeCentral chrome-moly steel frame
Front SuspensionWhite Power Up Side Down 4357 MXMA fork
Rear SuspensionCentral shock absorber (WP BAVP3612) with PRO-LEVER linkage to rear- swing-arm with needle bearing
Trail62o

Wheels & Brakes

Front Tire Size90/90 -21
Rear Tire Size130/80 -18
Front BrakesSingle 300 mm disc, 4 piston caliper
Rear BrakesSingle 220 mm disc, 1 piston caliper

Dimension & Weights

Seat Height36.4 inches / 925 mm
Wheelbase59.4 inches / 1510 mm
Ground Clearance310mm / 12.2 in
Fuel Tank Capacity11L/ 2.9 US gal / 2.3 Imp gal
Dry Weight149 kg / 328 lbs

Features

  • Four-stroke engine
  • Single-cylinder
  • Overhead camshaft (SOHC)
  • 4 valves
  • Engine balancer
KTM 640 LC4 Supercomp (1999)
KTM 640 LC4 Supercomp (1999)

Know someone who’d find this useful? Share this page with a friend, your riding club or your favourite motorcycle community.

Explore our collection of KTM motorcycles for detailed specifications and model information. Or browse all motorcycle manufacturers.


more Specifications