A range of tires designed by Ensign to perfectly mimic trials tires from the 1940s through to the 1960s. At a time when motorcycle trials were as popular as circuit racing, many riders wanted the improved off-road grip that these tires offered. At the same time, American off-road racing was becoming increasingly popular, and British bicycle manufacturers began building special models aimed at those markets. These bikes were equipped with trials tires, whether they were for export or home sale. Less aggressive than modern motocross tread patterns, the Ensign Universal Trials tire is road-legal and suitable for on-road and off-road use. The sizes offered reflect the most popular equipment of the time. This 400-19 Ensign Universal Trials motorcycle crossply tire is ideal for: AJS 18CS Southerner Scrambler, Ariel HS Scrambler, HT; Unrivaled G3C and Norton Nomad.