1958 BSA A7 Shoting Star Technical Analysis & Specification Breakdown
At the heart of the 1958 BSA A7 Shoting Star naked motorcycle, BSA features a 497 cc (30.3 cu in) air-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 19.7 HP (14.4 kW) at 6,000 rpm. With a specific output of 39.6 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the A7 Shoting Star measures 193 kg (425 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (9.8 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,391 mm (54.8 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's BSA archive, this model family spans 9 indexed model years from 1954 to 1962, 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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
