"We're bringing some of New Zealand's best riders to Wings Over Wairarapa and they will give the crowd an exciting and edgy display," says Mr Dempsey.
"There will be great jumps, tricks and aerials all completed to some cranking music - it will be a real party atmosphere."
Masterton's McManaway will be performing here for the first time.
"Casey has been with us for three years and is one of our advanced riders. It will be his first professional show in Masterton and he is really excited about performing in front of a local crowd," said Mr Dempsey.
FMX is a variation of motocross involving jumps and stunts.
It is less about speed and more about the abilities of the riders who do their tricks high in the air.
Freestyle New Zealand performs in front of about 200,000 people a year.
They are scheduled for 10.30am, 12.12pm, 1.55pm and 4.30pm on Saturday and Sunday.
Matt Schubring and the FMX All Stars from Big Screens Australia on Vimeo.