Grey put up a good fight, fighting through traffic after a bad start to take second overall. Whitianga's Blake Wilkins snatched third overall, passing Drury rider Richard Sutton within sight of the finish line.
Te Awamutu's Rachel Archer was also impressive that day – she failed to quickly start her 250 four-stroke bike and, by the time she got going, she was 20 seconds behind the field. She rode the wheels off her bike, finishing eighth overall, just behind her father, veterans' class rider Kevin Archer.
In the juniors it was a great battle for the win between Yeoman and fellow Yamaha YZ125 rider Daniel Refoy, of Whangaparaoa - a tussle that went down to the wire with Yeoman taking the win by less than two minutes.
Now into its 10th year and continuing to grow, the secret for the Dirt Guide Series' success is that it caters for young and old alike - and while it does offer something to tempt the less-experienced novice and junior riders, it is also a challenge for the more serious and highly-competitive senior racers.
The series will have nudged past the halfway stage by late Sunday afternoon and the third and final round of the series is set for July 22, also at Ohakuri.
The final round doubles as the opening round of the parallel-but-separate NZXC cross-country series, that Yamaha-backed competition piggy-backing on to select major events throughout the North Island.