Ulster have completed the signings of Ireland-qualified prop Keynan Knox and back Chay Mullins.
Knox, who is Irish-qualified through residency, has signed a two-year deal to join the province after a spell with French Pro D2 side USON Nevers.
The 27-year-old South African has also played for CS Bourgoin-Jallieu and Munster.
He racked up 33 appearances during his six-year stint with Munster, featuring eight times in the United Rugby Championship winning season in 2023.
"I am delighted to be joining Ulster Rugby this summer, and I can't wait to meet the staff and my new teammates in pre-season," said Knox.