The Bulls have signed three players from the Southern Kings after the Port Elizabeth Franchise were relegated from Super Rugby and replaced by the Lions.
The three players, Bandise Maku, Jacques Engelbrecht and David Bullbring, will leave the Southern Kings immediate effect, and will be available for their Currie Cup 2013 campaign.
Maku, who won the Super Rugby title with the Bulls in 2010 and the Currie Cup with the Lions in 2011, signed a three year contract and would remain with the union until October 2016.
Engelbrecht, who represented the Springbok Sevens team earlier in his career, also signed up for a three-year stint as did Bullbring, who had previously represented both the Lions and the Kings in the Super Rugby competition.
Hooker Callie Visagie was granted an immediate release from the Lions, to join the Bulls, after he had been on loan from the Lions for the Super Rugby season.
"With the Southern Kings not qualifying for the 2014 Super Rugby tournament, these players became available and we are pretty pleased to get them to sign with us," said High Performance manager Xander Janse van Rensburg.
"Bandise and Callie will step into the breach left by the departing Chiliboy Ralepelle, David will fill the gap left by Juandre Kruger and Jacques will take over the role played by the two Potgieters.
"Waylon Murray, who joined us earlier in the week will add depth to our midfield ranks where the exit of Wynand Olivier and Francois Venter made us a bit thin on experience."