| MODEL | GILERA NORDWEST 600 1991 |
| Year | 1991 |
| Engine Type | Four stroke, single cylinder, DOHC, 4 valves |
| Displacement / Capacity | 558 cc / 34.0 cu in |
| Bore X Stroke | 98 x 74 mm |
| Compression Ratio | 10.5:1 |
| Cooling System | — |
| Max Power | 36.5 kW / 49.5 hp @ 7250 rpm (46 hp @ 7000 rpm at rear tyre) |
| Max Torque | 51 Nm / 37 lb-ft @ 5500 rpm |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | 2x 270 mm discs, 4 piston calipers |
| Rear Brakes | Single 240 mm disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 141 kg / 310 lbs |
| Wet Weight | 173 kg / 377 lbs |
| WHEEL SPECS | |
| Front Tyre | 120/60-17 |
| Rear Tyre | 160/60-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 12 Litres / 3.17 US gal |
| Fuel Consumption | 17.5 km/l |
| Top Speed | 170.9 km/h / 106 mph |
Gilera's trail-styled big single, built around the 558 cc four-valve engine derived from its RC 600 enduro. It was quick for its class, with a tested top speed near 171 km/h and a mid-13-second quarter mile.
