| Ace Motorcycles | | History of Ace four cylinder motorcyles manufactured in Phildelphia, as well as other antique motorcycles. |
| Allen Vintage Motorcycle Museum | | A collection of key-note British and American racing and road bikes from the past 50 years. Includes a selection of Japanese and European machinery. |
| Big Sid's | | Collectable motorcycles; modern and vintage, foreign and domestic; including such makes as Vincent, Triumph, Norton, AJS, Matchless, Indian, Harley, Ducati, BMW and others. Extensive collection of vintage photographs; articles; riding, maintenance, acquisition, and restoration tips. |
| British Belt Drives | | Manufacture primary belt drives for Triumph, Norton, and BSA. Also produce springer front ends & billet front brakes. |
| Brough Superior Motorcycles | | Includes reproduced catalogue of the marque. Information on Brough's most famous customer, Lawrence of Arabia. |
| BSA Bantam Library | | B.S.A. Bantam Classic Motorcycle Library, this website covers all the models: D1, D3, D5, D7, D10, D14 and the D175. Includes wiring diagrams and history. | |
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