In a new twist this year, riders are permitted to ride their own bikes, rather than share one bike between the two of them, as in past seasons, and this means Groombridge and Hurley may campaign both the Suzuki RM-Z450 and RM-X450 model machines.
"We have not decided what bikes we will be riding, and we may yet share the same bike anyway, but both models of the Suzuki are capable of winning this race, so it doesn't really matter," said Groombridge.
"Whatever we decide to ride, I'm sure we'll be competitive.
"I've been doing quite a bit of riding lately, so my fitness is good but it's a different race to prepare for. We'll need to have spare wheels and things like that on standby, but really, I just ride it like a big motocross race.
"The trick is to keep your concentration levels up. One mistake and you're into a tree."
Despite their own star rating, Groombridge and Hurley will come up against some heavyweight opposition, including current Woodhill Two-man Cross-country series leaders Josh Jack and Luke Mobberley, from Kaukapakapa and Muriwai Beach respectively, as well as Auckland's former national enduro champion Chris Power, who will team up with Palmerston North's three-time former national cross-country champion Adam Reeves.
It will also be worth watching out for former Suzuki team-mates Darryl August, of Taupo, and Manawatu's Gordy Brooker, who may again be expected to partner up to tackle the veterans' class.
The iconic Suzuki Six-Hour will be followed the next day by the second annual Suzuki Junior Three-Hour race at the same venue, although the riders will be traversing a different and slightly-less daunting route through the Ohakuri Forest.
