VS
The 1955 BSA B33 and 1959 BSA A10 Golden Flash represent two chapters in BSA's storied history.
The 1955 BSA B33 from United Kingdom was powered by a 499cc OHV single producing 23hp at 5500rpm. Weighing 170.0kg (375 lbs) and with a seat height of 780mm, it was aimed at standard riders.
The 1959 BSA A10 Golden Flash by contrast offered 646cc of OHV twin power, delivering 34hp at 5750rpm. Tipping the scales at 182.0kg (401 lbs) with a top speed of 155km/h (96 mph), it offered a distinct riding experience. 1950s bikes represent the golden age of British motorcycling and early Japanese innovation, with well-maintained examples commanding premium prices.
The 1955 BSA B33 from United Kingdom was powered by a 499cc OHV single producing 23hp at 5500rpm. Weighing 170.0kg (375 lbs) and with a seat height of 780mm, it was aimed at standard riders.
The 1959 BSA A10 Golden Flash by contrast offered 646cc of OHV twin power, delivering 34hp at 5750rpm. Tipping the scales at 182.0kg (401 lbs) with a top speed of 155km/h (96 mph), it offered a distinct riding experience. 1950s bikes represent the golden age of British motorcycling and early Japanese innovation, with well-maintained examples commanding premium prices.
Specifications Comparison
| 1955 BSA B33 | 1959 BSA A10 Golden Flash | |
|---|---|---|
| Displacement | 499 cc | 646 cc |
| Power | 23 hp | 34 hp |
| Torque | 35.0 Nm | 47.0 Nm |
| Cylinders | 1 | 2 |
| Top Speed | 130 km/h | 155 km/h |
| Quarter Mile | — | — |
| Dry Weight | 170.0 kg | 182.0 kg |
| Wet Weight | 183.0 kg | 195.0 kg |
| Seat Height | 780 mm | 790 mm |
| Wheelbase | 1370 mm | 1400 mm |
| Fuel Capacity | 14.0 L | 14.0 L |
| Gears | 4 -speed | 4 -speed |
The Verdict
Comparing these two BSA machines reveals the brand's evolution. The 1955 BSA B33 laid the groundwork with 23hp, while the later 1959 BSA A10 Golden Flash pushed output to 34hp. From a collector's perspective, the 1959 BSA A10 Golden Flash holds the edge with a 7/10 rating. Either way, both are worthy additions to any BSA collection.
About the 1955 BSA B33
The 1955 1955 BSA B33 is a 499cc single-cylinder standard motorcycle that became one of BSA's most memorable motorcycles of the 1950s.
Full 1955 BSA B33 Profile →About the 1959 BSA A10 Golden Flash
BSA released the 1959 BSA A10 Golden Flash in 1959 with a 646cc OHV twin powerplant making 34hp — a definitive standard motorcycle.
Full 1959 BSA A10 Golden Flash Profile →