- Manufacturer: BSA
- Model: B33
- Engine: 500cc
- Year: 1953
- Decade: 1950s
- Machine Type: Road
B33's, for those of you not so familiar with it, is the big brother to the post-war BSA B31. The B31 runs dimensions 88mm x 71mm while the larger engine gave birth to B33 to 85mm x 88mm is almost square. 500cc bike get a wider rear tire, flywheel weight and a larger inlet valves, but otherwise much the same as 350. Then there B34 - competition engine with a high gear ratio, which gave birth to the legend that is DBD34 and Gold Star. But back in 1949 or more, rigid 23bhp B33, as B31, welcome to a light clutch, smooth on other equipment, melodious exhaust note and reasonable prices. This bike was, according to Owen Wright; 'handsome, well-balanced and they played with spirit. "
