Seen as one of the best loosehead props in world rugby, Kitshoff joined Ulster after winning his second Rugby World Cup in Paris with South Africa.
Kitshoff joins Ulster from DHL Stormers, where he captained the side to a BKT URC title in 2021.
Nicknamed 'Spicy Plum', Kitshoff will hope to show his elite levels of scrummaging in Ulster's front row.