Ruan Vermaak has penned a new deal with the Bulls which will see the big lock remain at Loftus until June 2027.
A 27-man Stormers squad left Cape Town on Tuesday for a crucial two-match United Rugby Championship tour.
Fullback Warrick Gelant believes that the Stormers are set up to handle whatever is thrown at them on their upcoming two-match tour.
The Lions are in a race to make the top eight of the United Rugby Championship table.
Bulls director of rugby Jake White believes the way his team beat the Ospreys 61-24 at Loftus Versfeld highlights the variation in their game.
Stormers director of rugby John Dobson revealed the Cape Town side will be travelling with their best players for their next two matches in the Northern Hemisphere.