In 2016 they won the British 600 Supersport and British Superstock 1000 Championships with Team WD40 and Buildbase BMW respectively .
Mackenzie has two sons who both race in the British Superbike Championship - 22 year - old Tarran , and 25 year - old Taylor .
In 2016 sons won the British 600 Supersport and British Superstock 1000 Championships with Team WD40 and Buildbase BMW respectively .
Mackenzie has two sons who both race in the British Superbike Championship - 22 year - old Tarran , and 25 year - old Taylor .