BSA Rocket Gold Star

The BSA Rocket Gold Star, often called the RGS, was a 646 cc air-cooled parallel twin motorcycle produced by the Birmingham Small Arms Company at Small Heath, Birmingham. Launched in February 1962, it was one of the final range of A10 twins, combining a tuned A10 Super Rocket engine with the double-downtube Gold Star frame. The idea began when Gold Star tuner and dealer Eddie Dow built such a special for a customer, and BSA put the concept into limited production. The later Super Rocket engine used a 357 Spitfire camshaft and gave 46 bhp as standard, or about 50 bhp with options. Production ended in 1963 because the unit construction A65 was replacing the A10 twins.