 Although less powerful than its main competitor the Norton Manx the G50 proved highly competitive at three hundred pounds and was faster round bends.If success is measured by longevity then this is the most successful Matchless motorcycle, and high specification replicas are still being produced to this day, although financial problems at AMC ended production in 1963.In 1963, the AMA decided that the G50 should not be allowed to race in the USA as it was not based on a production street bike.