What was the last single-cylinder shaft-drive BMW motorcycle model made?
It was the relatively powerful and elegant R27, a 250cc OHV vertical single with the only rubber-mounted thumper engine BMW ever produced. The engine pumped out 18 horsepower, the highest ever for a shaft-drive BMW single. BMW manufactured 15,364 R27s over the production years of 1960 through 1966 (some of the 1966 R27s were sold as 1967 models).
