Honda NX 650 Dominator (1991) vs Honda XR 250R (1992) vs Honda CB 250SC Nighthawk (1982-89) vs Honda XL125S (1978-79) vs Honda XL 250R (1983)
Comparison technical specifications
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| Make: | Honda | Honda | Honda | Honda | Honda |
| Model: | NX 650 Dominator | XR 250R | CB 250SC Nighthawk | XL125S | XL 250R |
| Years: | 1991 | 1992 | 1982-89 | 1978-79 | 1983 |
| Engine: | Four-stroke, single cylinder, SOHC, 4 valve per cylinder | Four-stroke, single cylinder SOHC, 4 valve | Four stroke, twin cylinder, SOHC, 2 valve per cylinder | Four stroke, single cylinder, OHC | Four stroke, single cylinder, SOHC, 4 valve |
| Capacity: | 644 cc / 39.2 cu-in | 249 cc / 15.1 cu-in | 239 cc / 14.5 cu-in | 124 cc / 7.6 cu-in | 249 cc / 15.1 cu-in |
| Bore x Stroke: | 100 x 82 mm | 73 x 59.5 mm | 53 x 53 mm | 56 X 49 mm | 75 x 56.5 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 8.3:1 | 10.0:1 | 9.2:1 | 9.3;1 | 10.2:1 |
| Induction: | Single 40mm Keihin VE-type carb | Single 30mm carburator | 26mm Keihin carburetor | Single 26 Keihin carburetor | 1x 28mm Keihin |
| Ignition: | Digital CDI | CDI | CDI | CDI | Electronic |
| Starting: | Electric | Kick | Electric | Kick | Kick |
| Max Power: | 45 hp / 33.5 kW @ 6000 rpm | 30 hp / 21.9 kW @ 9000 rpm | 20 hp / 14.6 kW @ 9000 rpm | 12.5 hp / 9.5 kW @ 10000 rpm | 20.2 hp / 15 kW @ 7500rpm |
| Max Torque: | 53 Nm / 5.7 kgf-m @ 5000 rpm | 24.5 Nm @ 7500 rpm | 18 Nm / 12.5 lb-ft @ 6500 rpm | 10 Nm / 7.3 lb-ft @ 8000 rpm | 19.6 Nm / 14.5 lb ft @ 8000 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | 41mm leading-axle fork | 41 mm Air assisted telescopic forks | 31mm Telescopic forks | Telescopic forks | Air assisted telescopic fork |
| Rear Suspension: | Pro-Link, | Pro-Link, adjustable compression and rebound | Dual shocks with 5-way preload adjustment. | Swinging fork | Single shock, swing arm |
| Front Brakes: | Single 256mm disc 2 piston caliper | Single 240 mm disc 2 piston caliper | 152mm Drum | 130mm Drum | Drum |
| Rear Brakes: | Single 220mm disc 1 piston caliper | Single 220 mm disc 1 piston caliper | 152mm Drum | 120mm Drum | Drum |
| Front Tyre: | 90/90–21 | 80/100-21 | 90/100-18 | 2.75 -21 | 3.00 -21 |
| Rear Tyre: | 120/90–17 | 110/100-18 | 120/90-16 | 4.00 -18 | 4.60 -17 |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 9 Litres / 2.4 gal | 19.5 Litres / 5.1 US gal | 6.8 Litres / 1.6 US gal | 9 Litres / 2.6 gal |