By Dan Snierson
Updated September 10, 2009 at 02:00 PM EDT

Sons of Anarchy made a ratings splash on Tuesday night, netting a series-high 4.3 million viewers with its season 2 premiere. The FX drama jumped 95 percent in the 18-to-49-year-old demographic, representing the biggest increase of any original series on the network from season 1 to season 2. Final ratings will be available Thursday.