The fins determine how your board rides: stable, maneuverable, or fast. You’ll find single fins, twin fins, thrusters, and quad sets, as well as sidebites and soft fins for softboards—primarily from Futures—Fins from Torq, ROAM, and Bugz. Be sure to check your board’s fin system, such as Futures or US Box. We’d be happy to help you figure out which set is right for your surfboard. You’ll find fin boxes and screws in the Surf Accessories section.