Besides avoiding them? Not really.
What else would you do--ask him to dump his friends because you don't like them? That doesn't seem fair. He would never agree to it, anyway. Obviously he likes these idiots and gets some sort of enjoyment from hanging with them or he wouldn't do it. You may not like it, you may not understand it, but it's not really your call. Look at it this way: having obnoxious friends is better than having no friends and sticking to you like a leech 24/7/365. At least he has his own life, even if it's a bro' life.
The only request you have a right to make is that he see them apart from you. You are under no obligation to be around these guys if they repulse you. Other than that, if he wants to be with his friends and let them take advantage of him all the time, that's his problem. Stay out of it and hope he outgrows them.
Thanks for the question.