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The Raglan rider made it back-to-back wins in the national motorcycling cross-country championships on Sunday.
After dominating round one in Norsewood, he finished nearly 2min ahead of runner-up Seth Reardon at Scorgie's Property in Lee Stream.
That leaves him well-positioned to claim the overall title.
Two legs remain, although as only each rider's best three results count towards the final standings, Dickey will have two chances to clinch the title.
A top-three result at the next round in Marlborough may mean he does not need to race during the final weekend in Taupo.
On Sunday he showed his class early, taking the lead at the 400m mark and extending that as the race went on.
"I pulled a massive gap and just maintained that until the end,'' the 24-year-old dairy farmer said.
"I had a couple of big crashes on Sunday, one when I hit a clump of tussock grass and was flung off the bike, but I was far enough in front that I could recover myself and not lose my position.
"It was quite slippery on the short grass sections and hard to stop the bike.
"I got tangled in some fence wire on another occasion and lost about 20 seconds getting free, but it was nothing major and again I didn't lose my lead.
"After that I was just trying to stay focused and not make any more mistakes.
"One good result now at the next round should give me the title.
"I just have to keep calm and carry on.''
In the junior race, defending champion Adam Loveridge claimed first, but Raglan's Coby Rooks came in second to hold his lead in the overall series.