BSA B25

The BSA B25 was a series of 250 cc unit construction single cylinder overhead valve four stroke motorcycles that Birmingham Small Arms made from 1967 to 1971, developed from the C15 and billed as the fastest British production 250. It began as the C25 Barracuda in Britain and the B25 Starfire in the United States, with a square finned alloy barrel and head, a sports camshaft and about 26 bhp. Variants included the Fleetstar for police and fleet use, the Woodsman, and the oil in frame Gold Star 250 and Victor Trail 250 of the 1970 Power Set range. Plain big end failures harmed its reputation, and the 250s were dropped in 1972 as BSA cut its models.