The event has grown every year since its inception in 2010, and this year is again expected to attract Kiwi internationals from across the spectrum of dirt-bike racing - from the motocross, moto trials, enduro and cross-country codes.
New Zealand already has several popular and well-established extreme enduro events, but now Clarke and the KTM motorcycle company have bound them together to create a super competition.
The five major extreme enduro events will remain stand-alone fixtures, if that is how riders want to treat them, but Clarke is also bringing them together to form a KTM Extreme Enduro Series, with a special prize to the one outright winner in each bike class.
"The KTM Extreme Enduro Series is a combination of five different events that will decide New Zealand's best extreme enduro rider," said Clarke.
"Points will be awarded in each round across four different grades - pro, expert, ladies and clubman.
"At the series final, the two-day No Way In Hell extreme enduro [on April 20-21], the riders with the best tally from any four of the events will take home the trophy.
"All the No 1 riders from all the motorcycling codes will likely come together for this."
Mitchell Nield, from the Bay of Islands, Mike Skinner, from Auckland, and South Waikato's Clarke ensured their journey south was particularly worthwhile last year as they battled for the main honours.
Riders were set off in groups of four at 30-second intervals and it was Nield who took the early initiative, with Clarke, Skinner and a flying Greg Delautour, from Taupo, soon fighting for the lead.
Delautour executed a pass on Nield to snatch the lead on lap two, but a broken arm just a lap later ended Delautour's day early.
Racing remained tight at the front, with Clarke eventually prevailing, ahead of Nield, to take his maiden Nut Buster win.
The opening round of this season's Value Cars-sponsored series is set for Trig Rd, Woodstock, North Canterbury, and will be signposted from West Oxford and the Waimakariri Gorge Bridge.
Enduro Series calendar
Round 1: September 28 - Nut Buster Hard Enduro
Round 2: November 17 - Riverhead 100
Round 3: December 7 - Tokoroa Enduro X
Round 4: February 8 - Te Puke Enduro X
Round 5: April 20 and 21 - No Way In Hell