BSA 350cc B31 & 500cc B33 (SWINGING ARM) ORIGINAL FACTORY PARTS CATALOGUE

This BSA Original Factory Illustrated Parts Catalogue covers the B31 350cc OHV (Swinging Arm) models from Engine No. GB31-101 and theB33 500cc OHV (Swinging Arm) models from Engine No. GB33-101 that were in production during the 1950's.