Queenstown mountain biker Kelly McGarry, who earned global media attention after he landed a flip over a 21.9m canyon gap in Utah last year, will be bringing his daredevil skills to the event.
McGarry's discipline is boasting its deepest field yet, with 19-year-old British phenomenon Matt Jones set to battle it out with the Czech Republic's Tomas Zejda and a host of Australia's and New Zealand's best dirt jumpers.
Freestyle motocross rider Jesse Dobias, of Dunedin, rode at the original Farm Jam when he was 12 on his 85cc bike. Now 20, he will be throwing down his tricks against New Zealand star Levi Sherwood, Red Bull team-mate Nick Franklin, Brazilian X Games rider Fred Kyrillos and Red Bull X-Fighters rider Truman Carroll.
Brothers Dan and Brett Frew, the Farm Jam organisers and property owners, have been overwhelmed at the response from action-sports athletes.
Brett said an ''absolutely huge'' list of about 30 international riders from 10 different countries had put their hands up to come along. However, it was not just the mountain bikers and FMXers who deserved the lion's share of attention, he said.
''If people appreciated the calibre of riders coming for BMX, they would be blown away.''
American BMX stars Michael Clark and Anthony Napolitan will be aiming for the top prize spots against some of New Zealand's and Australia's finest riders, including Nitro Circus star Brandon Loupos, of Australia, New Zealander Paul Langlands and Frenchman Istvan Calliet.
The ''very casual'' nature of Farm Jam, which is held on private land rather than in a large stadium and allows the riders a decent amount of time to showcase their skills, added to the event's appeal, Brett said.
''You don't have to put down one insane run. There's 45 minutes to an hour in a jam session.''
The riders themselves judge the top three place-getters in each discipline.
Farm Jam 2014 will be held at the Frew brothers' farm in Otapiri Gorge - signposted from Centre Bush and Browns - from 11am to 6pm.
