It's been quite a while since rounds, but the Penrite ProMX Championship Presented by AMX Superstores resumes its dirt track warfare from the Maitland District Motorcycle Club Motocross Track in the NSW Hunter Valley for round four. We kick off our coverage with all the action in Thor MX1, as current championship leader, KTM’s Regan Duffy tries to hang on to his lead. But his main opposition, Yamaha’s Luke Clout is hounding his heels fast in this enthralling contest.