Suitable for :
BSA C15 1960-67 Heavyweight fork models (External Spring)
BSA B40 1961-70
BSA WDB40 1967 BSA A7/A10 up to 1962
BSA A50/A65 1964-67
Can also be used on the following, although not standard (only models with short headlamp brackets fitted);
BSA B31 BSA B33 BSA M33 BSA M20 BSA M21