| MODEL | KTM 620 RXC 1998 |
| Year | 1998 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valves |
| Displacement / Capacity | 609 cc / 37.2 cu in |
| Bore X Stroke | 101 x 76 mm |
| Compression Ratio | 10.4:1 |
| Cooling System | Liquid cooled |
| Max Power | 40.1 kW / 55 hp @ 7000 rpm |
| Max Torque | 60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm |
| Ignition | KDC-CDI |
| Induction | Dell'Orto PHM 40 SD |
| Start System | Kick & electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | WP telescopic forks, compression and rebound adjustable |
| Rear Suspension | Single chock, preload, compression and rebound adjustable |
| Front Brakes | Single 320 mm disc, 4 piston caliper |
| Rear Brakes | Single 220 mm disc, 1 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 940 mm / 37 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 139 kg / 306 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/90 - 19 |
| Rear Tyre | 140/80 - 17 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 155 km/h / 96 mph |
The R/XC, here listed as the 620 RXC for 1998, was KTM's off-road competition single, listed here as a 1998 model. It shares the 609 cc four-valve engine and WP suspension of the LC4 range, with a 139 kg dry weight and a 940 mm seat. It was built primarily for off-road racing and trail riding.
