Nortom Dominator 99 (1961)

The Norton Dominator 99 is a classic motorcycle model from 1961. It features a four-stroke, twin-cylinder engine with two valves per cylinder operated by pushrods, and has a capacity of 497 cc. The bike has a compression ratio of 8.5:1 and is air-cooled. The induction system includes two Amal Monobloc 11/16 in bore carburettors, while the starting mechanism is a kick-start. At its peak, the bike generates 26.8 kW / 36 hp at 7000 rpm. The Norton Dominator 99 has a four-speed transmission and a chain final drive. Its frame is a full duplex cradle ‘Featherbed’ type. The front suspension consists of telescopic forks with coil springs, while the rear suspension is a swinging arm with adjustable, three-position hydraulically damped Girling units. It also features drum brakes on both the front and rear wheels. The bike weighs 185kg/408lbs and can reach a top speed of 177 km/h / 110 mph. The Norton Dominator 99 is considered to be a classic motorcycle model because of its quality performance and sleek design.


Technical specifications:

Make Model: Norton Dominator 88 SS

Year: 1961

Engine: Four-stroke, twin-cylinder, two valves per cylinder operated by pushrods

Capacity: 497 cc / 30.3 cu in



Bore x Stroke: 66 x 73 mm

Compression Ratio: 8.5:1

Cooling System: Air cooled

Induction: 2 x Amal Monobloc 11/16 in bore carburettors

Starting: Kick

Max Power: 26.8 kW / 36 hp @ 7000 rpm

Transmission: 4 Speed

Final Drive: Chain

Frame: Full duplex cradle ‘Featherbed’ type

Front Suspension: Telescopic forks with coil springs

Rear Suspension: Swinging arm with adjustable, three position hydraulically damped Girling units

Front Brakes: Drum, ~A203 mm / ~A8 in

Rear Brakes: Drum, ~A178 mm / ~A7 in


Wet-Weight: 185 kg / 408lb

Top Speed: 177 km/h / 110 mph
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