Off contract at the end of the 2012 season, the new deal means the 26 year old will be with the club for a further two seasons.
Gibbs made his debut for Wests Tigers back in August 2003 against the Panthers and has played a total of 135 NRL games.
Gibbs was a product of the successful Wests Tigers CUBS program which was set up to create a pathway for talented youths into the senior squads. This has also included the likes of captain Robbie Farah, Liam Fulton and Chris Lawrence.
In 2002, Gibbs was a member of the premiership winning Wests Magpies SG Ball side coached by current assistant Wests Tigers coach, Peter Gentle. Fellow team mate, Liam Fulton was also part of this squad.
Gibbs was also a part of the successful Wests Tigers Premiership winning side in 2005.