Honda NX 650 Dominator (1990)

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The Honda NX 650 Dominator is a motorcycle produced in 1990 with a four-stroke, single cylinder, SOHC, 4 valve per cylinder engine with a capacity of 644 cc/39.2 cu-in. It has a 100 x 82 mm bore-to-stroke ratio and is air-cooled with a compression ratio of 8.3:1. The bike has a single 40mm Keihin VE-type carburettor with a digital CDI ignition and electric starting. The maximum power output is 45 hp/33.5 kW at 6000 rpm and maximum torque is 53 Nm/5.7 kgf-m at 5000 rpm. The transmission is a 5-speed manual with a final chain drive. The bike uses a steel, single cradle frame with a 41mm leading-axle fork suspension and a Pro-Link rear suspension system, both have wheel travels of 220 mm/8.6 in and 195 mm/7.6 in, respectively. The front brakes use a single 256mm disc with a 2 piston caliper, while the rear brakes use a single 220mm disc with a 1 piston caliper. The bike has a fork angle of 62 degrees and a trail of 115 mm/4.5 in, and has a wheelbase of 1435 mm/56.4 in. The seat height is 870 mm/24.2 in and has a ground clearance of 250 mm/9.8 in. The dry weight is 163 kg/359.3 lbs and wet weight is 178 kg/392.4 lbs with a fuel capacity of 16 Litres/4.2 US gal. Fuel consumption average is at 17.8 km/lit, and the maximum speed is 160.8 km/h/100 mph. It has a road test of Motosprint Group Test 1990.

Technical specifications:

Make Model: Honda NX 650 Dominator

Year: 1990


Engine: Four-stroke, single cylinder, SOHC, 4 valve per cylinder
Capacity: 644 cc / 39.2 cu-in
Bore x Stroke: 100 x 82 mm
Cooling System: Air cooled
Compression Ratio: 8.3:1
Induction: Single 40mm Keihin VE-type carb
Ignition: Digital CDI
Starting: Electric
Spark Plug: NGK, DPR 8EA-9
Engine Oil: Semi-Synthetic, 10W/40
Max Power: 45 hp / 33.5 kW @ 6000 rpm
Max Torque: 53 Nm / 5.7 kgf-m @ 5000 rpm
Clutch: Wet, multiple discs, cable operated
Transmission: 5 Speed
Final Drive: Chain

Frame: Steel, Single cradle frame
Front Suspension: 41mm leading-axle fork
Front Wheel Travel: 220 mm / 8.6 in
Rear Suspension: Pro-Link,
Rear Wheel Travel: 195 mm / 7.6 in
Front Brakes: Single 256mm disc 2 piston caliper
Rear Brakes: Single 220mm disc 1 piston caliper
Front Tyre: 90/90 21
Rear Tyre: 120/90 17
Fork Angle: 62 degrees
Trail: 115 mm / 4.5 in
Wheelbase: 1435 mm / 56.4 in
Seat Height: 870 mm / 24.2 in
Ground Clearance: 250 mm / 9.8 in
Dry Weight: 163 kg / 359.3 lbs
Wet Weight: 178 kg / 392.4 lbs
Fuel Capacity: 16 Litres / 4.2 US gal
Consumption Average: 17.8 km/lit
Braking 60 – 0 / 100 – 0: 13.8 m / 40.4 m
Standing 1/4 Mile: 13.9 sec / 147.8 km/h

Top Speed: 160.8 km/h / 100 mph
Road Test: Motosprint Group Test 1990

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