Flanker Derick Minnie returns after a long injury lay-off and winger Ruan Combrink and centre Harold Vorster have also been added to the Super group after missing some Currie Cup action due to injury.
Springbok flyhalf Elton Jantjies, centre Lionel Mapoe and hooker Akker van der Merwe, with Tecklenburg, returns from overseas duty.
The new squad members are former Pumas scrumhalf Faf de Klerk, Leopards number nine Dillon Smit, Leopards lock Robert Kruger and Pumas prop Corné Fourie, who are all full-blooded Lions now.