The only model for 1963 was the Triumph TR6 S/S (Street Scrambler). Engine numbers ran from DU102 to DU5790 with build dates running from Sept. 29, 1962 to August 14, 1963. Unit Construction, all the ...

The 1963 Triumph Bonneville was essentially a brand-new bike. Not quite designed from a clean slate, but nearly every part was new and/or improved. Gone were the days of adjusting the primary chain by ...