Nortom Dominator 99 (1961)

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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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