BSA W20
Specification:
Years of production : 1937-1940
Overall production : 126334 units
Engine : 82/94 mm
Compression ratio : 7:1
Length: 86in, width: 29in, height: 39in
Wheelbase : 54in
53k photo of BSA M20Frame: rigid, tubular
Carburetter : Amal 76/014 PS
Gearbox: 4 speed, foot-change