At the heart of the 1964 Norton 650SS allround motorcycle, Norton relies on a 646 cc (39.4 cu in) twin, four-stroke powerplant. In factory specification, peak output is rated at 52 HP (38 kW) at 6,800 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 80.5 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the 650SS measures 196.9 kg (434 lbs) wet (curb), translating to a power-to-weight ratio of 0.26 HP/kg (3.79 kg per horsepower). The 13.5-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 185 km/h (115 mph).
Within MotoLibrary's Norton archive, this model family spans 6 indexed model years from 1962 to 1967, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
