BSA B31 Additional Information
1952 BSA B31 350cc — A Classic Restored Beauty
This is more than just a motorcycle—it’s a piece of British two-wheel heritage, brought back to life.
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The BSA Story — A Bit of Backdrop
• BSA (Birmingham Small Arms Company Ltd.) began life in 1861 making firearms. Over time it expanded into bicycles, vehicles, motorcycles and more. ?
• They made their first motorcycle in 1910. Post WWI and WWII, they were hugely influential in setting standards for reliability, build, and exporting British engineering to the world. ?
• By the 1950s, BSA was the biggest motorcycle producer globally; they dominated in the UK and had strong export markets. But the changing tides (new technologies, competition from abroad) meant their classic designs became treasured relics. ?
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The B31 Model — What Makes It Special
• The BSA B31 was introduced in 1945 as one of BSA’s first all-new post-war designs. ?
• It’s a 350cc single-cylinder overhead valve (OHV) engine — reliable, simple, easy to maintain. ?
• Early models used a rigid frame with telescopic front forks; later versions adopted plunger (and eventually swinging-arm) rear suspension for more comfort. ?
• The B31 laid groundwork for other famous models — its engine designs influenced the sportier Gold Star series. So it’s not just a commuter or everyday classic; it’s a bit of engineering lineage. ?
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This Particular Machine — Rebuilt & Well-Documented
Here’s what makes this 1952 B31 stand out:
• Fully rebuilt from the ground up. Every major component overhauled / refurbished: engine, frame, suspension, electrics.
• It comes with a huge history file — past ownership, documented servicing, any original parts retained or replaced. That gives confidence, provenance, and adds to value.
• Period-correct parts used where possible; modifications made only to restore reliability or maintainability (without spoiling authenticity).
• Original specs: 350cc single; likely around 17–20 bhp (depending on state), four-stroke, kick start. ?
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