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The 1967 BSA A50 Royal Star and 1971 BSA B50MX represent two chapters in BSA's storied history.
The 1967 BSA A50 Royal Star from United Kingdom was powered by a 499cc OHV twin producing 34hp at 7000rpm. Weighing 175.0kg (386 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1971 BSA B50MX by contrast offered 499cc of OHV single power, delivering 34hp at 6000rpm. Tipping the scales at 149.0kg (328 lbs) with a top speed of 140km/h (87 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
The 1967 BSA A50 Royal Star from United Kingdom was powered by a 499cc OHV twin producing 34hp at 7000rpm. Weighing 175.0kg (386 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1971 BSA B50MX by contrast offered 499cc of OHV single power, delivering 34hp at 6000rpm. Tipping the scales at 149.0kg (328 lbs) with a top speed of 140km/h (87 mph), it offered a distinct riding experience. 1960s motorcycles capture the era of cultural revolution and racing heritage. Iconic models from this decade are among the most desirable classics.
Specifications Comparison
| 1967 BSA A50 Royal Star | 1971 BSA B50MX | |
|---|---|---|
| Displacement | 499 cc | 499 cc |
| Power | 34 hp | 34 hp |
| Torque | 36.0 Nm | 38.0 Nm |
| Cylinders | 2 | 1 |
| Top Speed | 155 km/h | 140 km/h |
| Quarter Mile | — | — |
| Dry Weight | 175.0 kg | 149.0 kg |
| Wet Weight | 188.0 kg | 161.0 kg |
| Seat Height | 790 mm | 830 mm |
| Wheelbase | 1380 mm | 1380 mm |
| Fuel Capacity | 14.0 L | 10.0 L |
| Gears | 4 -speed | 4 -speed |
The Verdict
Comparing these two BSA machines reveals the brand's evolution. The 1967 BSA A50 Royal Star laid the groundwork with 34hp, while the later 1971 BSA B50MX pushed output to 34hp. Both share equal collector appeal at 5/10. Either way, both are worthy additions to any BSA collection.
About the 1967 BSA A50 Royal Star
Born in 1967, the 1967 BSA A50 Royal Star is a 499cc twin-cylinder standard motorcycle producing 34hp from BSA.
Full 1967 BSA A50 Royal Star Profile →About the 1971 BSA B50MX
Introduced in 1971, the 1971 BSA B50MX features a 499cc OHV single engine producing 34hp, establishing itself as a notable dual-sport.
Full 1971 BSA B50MX Profile →