Thomas Luthi and Interwetten, which finished the inaugural Moto2 season in fourth place with five podiums, is to switch from a Moriwaki to Suter chassis in 2011.
Moriwaki won the first Moto2 riders' title with Toni Elias this year, but no other Moriwaki rider won a race.
Suter, which took the Constructors' crown, won races with four different riders.
Luthi, fourth in Sunday's final round at Valencia, will test the Suter for the first time at Valencia on Monday.
“We are looking forward to Moto2 2011, when we will change from Moriwaki to Suter and build on a strong foundation for the second season in Moto2, where we want to attack the top three, which was so near this year," said team boss Daniel M. Epp.