1967 Was the final year that Triumph produced the fire breathing T.T. Special. The T.T. was a souped up Bonneville featuring High Compression Pistons, Sports Camshafts, 1-3/16″ Amal Monobloc Carburetors, Energy Transfer Ignition, full bore Exhaust Pipes with no Silencers, Lighting, Horn or Speedometer. A bike destined for T.T Racing in the United States, all but a few were sent to either Tricor in the East or Johnson Motors in the West. It is said that there were 1200 or so machines produced for ’67, a batch of these were produced with early 1965 style Steering Heads with a steeper 65-degree Angle which were favored over the Head angle that was introduced for the ’66 season. These Frames are identifiable by the lack of Fairing Lugs, the Steering Damper Anchor Plate mount as well as UNF Threads all over (which made them different from the 1965 Frames).
Unfortunately although requested by US Dealers, the 1968 T.T. never went into production which is a great shame because it was destined to have this early style Frame, Alloy Rims as well as a central Oil Tank. The topic of these Frames is still a grey area because no paperwork has been found to back up this batch of machines but it can now be said after a good number of these bikes have been discovered even the most skeptical experts have now come around to the fact that these were factory produced, all the machines so far are within the same batch of serial numbers and were produced in December 1966. A link to a British Motorcycle Forum can be found at the end of this article which has an interesting thread on this subject.