'Sons of Anarchy' Season 4 Promo Features Danny Trejo (Video)

FX released a new promo for Sons of Anarchy Season 4, which will premiere on September 6.

Many will notice a new face on the show – Machete star Danny Trejo. He’ll play Romeo Parada, a new ally for SAMCRO who connect the motorcycle club with the Mexican drug cartel.

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Season 4 returns to the main issue that the protagonist of the show, Jax, (Charlie Hunnam) has struggled with in several of the other seasons. He wants out of the club, but with his mother (Katey Sagal) and step-father Clay (Ron Perlman) so deeply embedded in SAMCRO life, he may not ever be able to leave.

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"Clay's days are numbered, when he loses sway, I'm done with SAMCRO," Jax can be heard saying in the new promo.

Trejo isn’t the only star to drop by Charming, CA, this year. As previously announced, David Hasselhoff will appear this season as a porn star.

FX's Sons of Anarchy returns with a 90-minute Season 4 premiere on Sept. 6.