BSA B25

BSA B25
1969 BSA Starfire
ManufacturerBSA motorcycles
Parent companyBirmingham Small Arms Company Limited
Production1967–1971
AssemblySmall Heath, Birmingham, UK
PredecessorBSA C15
Engine247 cc (15.1 cu in), air-cooled, unit construction, OHV, four-stroke, single
Bore / stroke67 mm × 70 mm (2.6 in × 2.8 in)
Compression ratio10:1
Power26 bhp (19 kW) at 7250 rpm
TransmissionWet, multi-plate clutch, 4-speed gearbox, chain drive
Frame typeSingle cradle
SuspensionFront: telescopic forks
Rear: swinging arm
BrakesDrum brakes front & rear
Footnotes / references
[1][2][3]

The BSA B25 was a series of 250 cc (15 cu in) unit construction single-cylinder OHV four-stroke motorcycles made by the Birmingham Small Arms Company. Developed from the BSA C15, the machines were produced between 1967 and 1971.[4] The B25 was the fastest British production 250.[5]

  1. ^ Wright 1992.
  2. ^ Richmond 1967.
  3. ^ Henshaw 2015.
  4. ^ "BSAOC Year Listing". www.bsaownersclub.co.uk. Owners Club. Archived from the original on 7 October 2019. Retrieved 5 October 2019.
  5. ^ Wright 1992, p. 145.