Springbok backs Elton Jantjies and Jaco Taute have agreed to join the Stormers on loan from the Lions for the 2013 Super Rugby season.
Both backs became Springboks this year after they became Currie Cup champions in 2011.
Stormers head coach Allister Coetzee said: "We're very excited about having Elton and Jaco in Cape Town for next year's Super Rugby tournament.
"They're both quality players and we look forward to getting them involved here - both on and off the field - and seeing how they fit into the Stormers culture."
Taute, 21, tips the scales at 95 kilograms and will add depth in virtually every backline position. He made his Test debut at centre in the Rugby Championship last month, but has featured mainly at fullback at Super Rugby level.
Flyhalf Jantjies, 22, weighs 88 kilograms and scored over 200 points in Super Rugby and Currie Cup rugby combined this year. Like Taute he has played in two Tests for South Africa.