BSA Gold Star

The Gold Star was a motorcycle made by BSA from 1938–1963. They were 350 cc and 500 cc single-cylinder 4-stroke production motorcycle known for being among the fastest bikes of the 1950s. They were hand built, with many optional performance modifications available, and came from the factory with documented dynamometer test results, allowing the new owner to see the horsepower produced.

Origin

In 1937, Wal L. Handley lapped Brooklands at over on a BSA Empire Star, and was awarded one of the traditional Gold Star pins for the feat. That inspired BSA to produce the BSA Gold Star.

1948 YB32

After the war the all alloy 348 cc B32 Gold Star was released, with a very large list of optional components. Once ordered the bike was assembled by hand, and the motor bench tested. They were lighter than the comparable cast iron barrel and head B series single. They were very successful in the 350 class from 1949 to 1956. They could be specified in tourer, trials, ISDT, scrambles, racing or Clubmans trim. The ZB is taken from the beginning of the engine number.ZB is actually 1949, YB is 1948.

1949 ZB34

The 499 cc B34 Gold Star had a modified crankshaft and...
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