Jay-Z is bringing his swank 40/40 Club to Brooklyn’s Barclays Center.

The rap mogul and Nets’ part-owner announced yesterday he’s expanding his sports bar and restaurant mini-chain by opening a 9,000-square-foot, 350-seat hot spot at the NBA Nets’ future home.

The new club, set to open Sept. 28, would be accessible only to ticket holders for NBA games, concerts and other arena events, said Lauren Menache, a 40/40 spokeswoman.

Season-ticket holders would get first crack at reservations.