The new deal will see Nofoaluma remain with Wests Tigers until at least the end of the 2021 season.
The former Australian Schoolboy has played 70 NRL games for Wests Tigers since making his debut in Round 10 of the 2013 season, achieving a number of representative honours.
Nofoaluma said he was excited to be extending his stay at Wests Tigers for at least the next four seasons.
“I can focus on footy now and focus on giving my whole attention to the team,” he said.
“I started off coming through Wests Tigers as a local junior, and I think to stay here is something special. I will always have this Club as a part of me, and I will cherish that forever.
“I know what we’re building here and the culture that’s coming along under Ivan Cleary,” said Nofoaluma.
“He wants to make me an even better player than what I am, and I like that. I like learning new things off other people and I’m excited to learn off him and see how he can improve me even further.”
Wests Tigers 2018 Player Movements
“David’s in a great position now where he can help lead this club into the future and help it reach its potential.”
Wests Tigers CEO Justin Pascoe said he was impressed with the way that Nofoaluma was developing both on and off the field.
“David is an amazing talent, one that not only excites our fans but Rugby League fans in general,” he said.“He’s a great player to have in the game and is continuing to develop in all areas.
“David’s growth off the field is the one thing that continues to impress me and having him a part of the club for the next four years is something to be excited about. It’s exciting not only for his team mates and the club but for all Wests Tigers Members and fans,” said Pascoe.