'Sons Of Anarchy' Season 5 Promos: New Characters And Simmering Rivalries As The Walls Close In On SAMCRO (VIDEO)

FX has released four new promos for the upcoming "Sons Of Anarchy" Season 5, and they're packed with revealing footage of new characters, simmering rivalries and proof that the walls are closing on SAMCRO.

In "Nero," we meet Jimmy Smits' character Nero Padilla, a Latino gangster who Gemma starts hooking up with this season. Clay, who's back in action after being shot by Jax -- albeit walking around with oxygen tubes going into his nose, isn't happy with the development. But in a chilling moment, Gemma lets him know that she doesn't care, reminding him of the brutal beating he gave her that precipitated the shooting. "Maybe you can bounce my face off the floor and see if you'll recognize me," she coolly tells him.

The "Jax" promo focuses on the new power dynamic at SAMCRO now that Jax has taken Clay's seat at the head of the table. Jax and Clay sit across a table, feeling each other out. A weakened and humbled Clay claims, "I'm all out of play. I'll just try to do what's best for SAMCRO", as chaotic scenes show that Jax's reign will come with its own problems.

The "Tara" spot highlights the rivalry between Jax's wife and mother. "I don't want you alone with my boys," Tara tells Gemma. "Here's something else that may sound familiar ... don't ever try to hurt my family again."

In "Survive," we see just how much trouble is headed SAMCRO's way. "Pope's coming at our families," Jax says of Harrold Perrineau's new character Damon Pope, who's fixated on avenging his daughter's accidental death. Scenes of gun violence and explosions play as Gemma and Opie are both seen getting arrested by authorities. In one scene, Jax asks Danny Trejo's once-undercover CIA agent when he'll get off the club's back. "When I don't need you anymore," Romeo tells him.

"Sons Of Anarchy" Season 5 premieres Tues., Sept. 11 at 10 p.m. ET on FX.