| MODEL | HONDA NX 650 DOMINATOR 1990 |
| Year | 1990 |
| Engine Type | Four-stroke, single cylinder, SOHC, 4 valves |
| Displacement / Capacity | 644 cc / 39.2 cu in |
| Bore X Stroke | 100 x 82 mm |
| Compression Ratio | 8.3:1 |
| Cooling System | Air cooled |
| Max Power | 33.5 kW / 45 hp @ 6000 rpm |
| Max Torque | 53 Nm / 39 lb-ft @ 5000 rpm |
| Ignition | Digital CDI |
| Induction | Single 40 mm Keihin VE-type carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump, oil carried in the frame |
| Gear Box | 5-speed |
| Clutch | Wet, multi-plate, cable operated |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel, single cradle |
| Front Suspension | 41 mm leading-axle fork, 220 mm / 8.6 in travel |
| Rear Suspension | Pro-Link single shock, 195 mm / 7.6 in travel |
| Front Brakes | Single 256 mm disc, 2-piston caliper |
| Rear Brakes | Single 220 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2195 mm / 86.4 in |
| Overall Width | 890 mm / 35.0 in |
| Overall Height | 1220 mm / 48.0 in |
| Seat Height | 870 mm / 34.3 in |
| Wheelbase | 1435 mm / 56.4 in |
| Ground Clearance | 250 mm / 9.8 in |
| Dry Weight | 163 kg / 359.3 lbs |
| Wet Weight | 178 kg / 392.4 lbs |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 120/90-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 13 Litres / 3.4 US gal |
| Fuel Consumption | 17.8 km/l / 41.9 mpg US |
| Top Speed | 160.8 km/h / 100 mph |
For 1990 Honda trimmed the Dominator's specification, dropping the kick-starter so the bike relied on its electric start alone, and fitting improved brake discs. The basic recipe stayed the same: a torquey 644 cc single in a single-cradle steel frame, long-travel suspension and a 21-inch front wheel. Production for the European market continued after the model left the US.
