Mapoe, who has just been named as a Springbok tourist for their three test match tour to Ireland, Scotland and England, will join the Bulls in December, while Visagie will be part of the pre-season group that will assemble in Pretoria on the 19th of November 2012.
Bulls coach Frans Ludeke said that he was pleased with the new additions which will help to provide depth for the former Super Rugby champions.
"The fact that Lionel has just been named a Springbok is well-deserved and proof of his abilities. "
"His pace, attacking mindset and versatility will be a tremendous asset to the Bulls in what will again be a very long and taxing season on the players. He will also add depth to our outside backs department," Ludeke said.
He was also impressed by Visagie this year.
"He will bring a lot of physicality to the pack, but is also a very intelligent rugby player and a good leader. Hooker is a very technical position and to have someone of Callie's skill and expertise available, will help us a lot."
Ludeke thanked the Golden Lions for the use of the two players.
"It is clearly being done to benefit the players and that is a very noble thing to do. One can only hope that the experience picked up by being involved with the Bulls will benefit all around," Ludeke said.
