Bermuda motorcycle Jediah Cumbermack has been praised for his impressive performances in the AJN Steelstock Limited Kawasaki British Superteen Championship last season. Cumbermack, who represents the British development team Rokit Rookies, finished twelfth overall in the championship, despite missing multiple rounds because of a broken wrist. Bison Track, who are among Cumbermack’s sponsors, wrote on …