Ultra4 – the unmodified, off the shelf, manufacturers class of Side by Side racers. Big fields, close racing. You can buy brand new and go racing. This group of racers has complete beginners and seasoned veterans racing. Some have had illustrious careers in motor cross. Some racers have come straight our of KiwiTruck racing. This is maximum attack and great to watch. ORANZ Class U – all specifications are as per ORANZ rulebook.

Please Note: Mixed Classes will be handicapped during Heat races to provide close final laps between differing Classes in Group. Group make-up may be adjusted on the day to maintain racer numbers on the track.