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The 1966 BSA Lightning A65L and 1971 BSA B50MX represent two chapters in BSA's storied history.
The 1966 BSA Lightning A65L from United Kingdom was powered by a 654cc OHV twin producing 52hp at 7000rpm. Weighing 178.0kg (392 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 1966 BSA Lightning A65L from United Kingdom was powered by a 654cc OHV twin producing 52hp at 7000rpm. Weighing 178.0kg (392 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
| 1966 BSA Lightning A65L | 1971 BSA B50MX | |
|---|---|---|
| Displacement | 654 cc | 499 cc |
| Power | 52 hp | 34 hp |
| Torque | 52.0 Nm | 38.0 Nm |
| Cylinders | 2 | 1 |
| Top Speed | 180 km/h | 140 km/h |
| Quarter Mile | — | — |
| Dry Weight | 178.0 kg | 149.0 kg |
| Wet Weight | 191.0 kg | 161.0 kg |
| Seat Height | 790 mm | 830 mm |
| Wheelbase | 1400 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 1966 BSA Lightning A65L laid the groundwork with 52hp, while the later 1971 BSA B50MX pushed output to 34hp. From a collector's perspective, the 1966 BSA Lightning A65L holds the edge with a 7/10 rating. Either way, both are worthy additions to any BSA collection.
About the 1966 BSA Lightning A65L
A standard motorcycle from 1966, the 1966 BSA Lightning A65L delivers 52hp from its 654cc OHV twin engine.
Full 1966 BSA Lightning A65L 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 →