Close competition has seen three different overall winners in the four rounds held to date.
Last season's champion Dan Cowper (Wanganui) won the opening round while Mitch Seymour from Wellington won the Cambridge and Wanganui events. Seymour is driving a new truck this season which has been designed and built by Howatt Engineering in the Hutt Valley which is claimed to produce over 700-horsepower.
After two second placings earlier in the year, Derek Smyth (Wanganui) won the most recent round at Whitemans Valley near Wellington.
A course comprising 30 obstacles - 15 attempted in the morning and the remainder in the afternoon - has been plotted at the Rangiuru Rd. The Rangiuru School uses gate sales and income from food and drink stalls to raise money for various school projects. The event starts at 8.30am.
Also on Saturday, Te Puke's Fagans Valley Raceway combines round two of the 2012 BOP Kart Club points series with the special attraction of broadsliding Supermotard motorcycle racing.
The meeting has a late-start "twilight" format with racing expected to start about 1pm.