This Triumph nameplate first appeared in the late 1930s, when the original Speed Twin was unveiled as a 498cc parallel-twin road motorcycle and quickly became one of the defining British motorcycles of its era. The original model established the formula that shaped Triumph’s twin-cylinder identity for decades, and it remained a core part of the company’s lineup through the postwar years and into the 1960s. The classic Speed Twin was eventually discontinued after the 1960s, ending its original production run.
The nameplate returned many years later when Triumph revived Speed Twin as part of its modern classic family. The modern interpretation debuted in 2018 as a new roadster that deliberately echoed the spirit of the original while using contemporary engineering and a more performance-oriented chassis and styling direction. That revival was not a continuation of the old machine, but a separate production period using the same historic name on a very different motorcycle.
Because the Speed Twin existed first as a mid-century Triumph twin and then reappeared in the modern era after a long gap, it should be treated as a nameplate with multiple production periods rather than a single uninterrupted model run. The result is one of Triumph’s most important heritage names, bridging the company’s classic engineering legacy with its current modern classic lineup.