His new ACU national category records include: the FIM Flying Kilometre speed of 185.103mph (297.894km/h), with best one-way speed of 194.086mph (312.351km/h), with GPS peak speeds of 197mph (317.041km/h), the FIM Flying Quarter Mile, the FIM Standing Quarter, the FIM Standing Mile and ACU Flying Quarter Mile.
Zef set the records as a tribute to the late Madmax team member Daley Mathison who was set to ride the electric motorbike in the Isle of Man TT Zero race.
Sadly and tragically he was killed in a serious crash at the IOM TT in 2019 and never got to ride the electric motorbike.
Developed by Nottingham University and Prof. Miquel Gimeno Fabra, the bike has been an IOM TT podium winner for three years in a row.
The hefty 300kg bike is capable of doing IOM laps in 21 minutes at speeds of 250km/h.