Since joining the event in 2012, and following a brace of runner-up finishes in 2012/2013, the Japanese team Mugen won the TT Zero race for the first time in 2014, and were victors in the race for 6 consecutive years through to 2019, setting 4 new lap records, and becoming the first electric motorcycle to lap the Snaefell Course at an average speed in excess of 120 mph in the process.