1972 BSA B50MX 1972 BSA 500cc B50MX, original and unmolested for sale$6,900

1972 BSA 500cc B50MX Frame Number: B50MX IG00630Engine Number: B50MX IG00630The BSA B50 was introduced in 1971 as the largest iteration of BSA’s four-stoke single that was originally introduced in 1958 as the 250cc C15 Star.

The B50 MX turned out to be the last competition motorcycle announced by BSA, just as the financially strapped company’s

efforts were drawing to a close. The factory’s closure was no reflection on the quality or design of any BSA, but instead of management and circumstance, as many company histories have pointed out. As it happened, the B50 MX was a truly fine design, a predecessor to today’s lightweight four-stroke MXers.

Its development had been driven by the great success of BSA’s works machines in international motocross, and while based on its B44 Victor predecessors, the bottom end was a complete redesign with stronger cases, built-up crankshaft, larger crankpin and beefier connecting rod. The result was that the B50 had a stout and powerful engine, honed by development and of a full 500cc. This was mounted in a completely new chassis with an oil-bearing frame, so-called ‘slimline’ forks and conical brakes. With its gleaming alloy fuel tank, beautifully tucked-in exhaust and a good riding position, the B50 MX made for an excellent motocrosser of which, relatively few were made.

The ’72 B50 offered, hails from asubstantial Southwestern collection. In excellent original condition throughout, the bike shows well and remains in perfectly unmolested, stock condition with all original paint and fine patina. On static display for several years, the bike will need re-commissioning before returning to regular off-road use. Sold on a Bill of Sale For more photos and details, please visit Listedbuy. com

Used 1972 11,111 miles Purple

  • Price: $6,900

  • Type: Motorcycles Competition

  • Location: Santa Monica, CA

  • Condition: Used

  • Year: 1972

  • VIN: B50MX IG00630

  • Mileage: 11111

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