The BSA Fleetstar (model #B25FS) was a motorcycle designed and built in the 1960s and 1970s by the Birmingham Small Arms company in Birmingham, England.
The B25FS had a 250 cubic centimetres (15 cu in) engine that produced 21.5 hp. The total weight allowed for this bike was 320 kilograms (710 lb) with a dry (unfueled) weigh of 137 kilograms (302 lb).
References
BSA Fleetstar Wikipedia(Text) CC BY-SA