| KTM MX 500/600 LC4 1989 |
| Engine type |
single cylinder, 4-stroke engine, liquid cooled |
| Cylinder |
alum. cylinder, Nikasil coated |
| Bore/Stroke |
90/78 and 95/78 |
| Displacement |
496 and 552.9cc |
| rpm st max HP |
8,000/min. |
| Valve timing |
4 valves over rock arm and one overhead camshaft, camshafts drive through single chain |
| Engine- and trans. lubrication |
forced lubrication throughEaton-oilpump; oil reservoir in main-frame front tube |
| Oil quantity |
2.2 liter engine oil
(full-synthetic 10W30, multigrade 20W50 over 10 degrees centigrade) |
| Primary drive |
straight gear 30:81 teeth |
| Clutch |
multi disc clutch in oil bath |
| Transmission |
5-speed claw shifted |
| Kickstarter |
Primary kickstarter |
| Cooling liquid |
1 liter, mixture rate anti-freeze : water = 2 : 1 |
| Final drive |
14:52T |
| Chain |
5/8 * 1/4" |
| Ignition |
12V 130W contactless thyristor ignition
with electric advanced system type SEM |
| Carburettor |
Bing 54/38/123 or Dell'Orto PHM 38 SD |
| Frame |
Central chrome-moly-steel frame |
| Fork |
White Power Up Side Down(Compression and Reboun adjustment) |
| Wheel travel front/rear |
300/350mm |
| Rear suspension |
White Power central shock absorber with Pro-Lever linkage
to rear swing-arm with needle bearing |
| Front brake |
Disk brake with carbon steel disc,2-piston brake caliper floated |
| Rear brake |
| Tyres front |
90/90-21" |
| Tyres rear |
5,10-18" |
| Fuee tank capacity
| 9 liter |
| Steering angle
| 61.5 |
| Wheel base |
1510+-10mm |
| Seat hight unloaded |
940mm |
| Ground clearance unl. |
340mm |
