St Helens pair Ade Gardner and Shaun Magennis have signed new two-year contracts until 2014.
Winger Gardner, 28, has made 267 appearances for Saints but has been out of action since damaging his Achilles tendon against Crusaders in June.
Second rower Magennis, 21, has made 24 appearances since his 2010 debut.
"Both Ade and Shaun are very important members of the team and we have missed them through injury this season," head coach Royce Simmons said.
"Before his Achilles tear, Ade was running the ball in 15 or16 times a game and making 150m for his team. He was also finishing off some nice tries and producing the type of form that brought him international recognition.
"Magennis had forced his way into the 19-man squad each week and was starting to show the potential we knew he was capable of.
"He did a tremendous job and is versatile enough to play in the front-row and at tight too," Simmons added.
"What has impressed me most is the dedication they have both shown when faced with season-ending injuries. They have worked hard to make sure they will be ready for a full pre-season and Ade could return before the end of this season.
"They have been immensely professional in the amount of hours they have put in to not only overcome these injuries but also to make themselves better footballers."