Hooker Martin Bezuidenhout and scrumhalf Tiaan Meyer will arrive in Kimberley later this week.
The Lions duo will replace Matt Dobson, who has left to play club rugby in England, and Ruan Snyman, who was injured while playing for Racing Métro and may not be able to return in June for the Currie Cup as planned.
Both Bezuidenhout and Meyer could challenge for a place in the Cheetahs' Super Rugby squad.
