Upgrading surfboard fins can make a huge change to your surfboards performance. Various fin shapes and sizes will make your surfboard perform better in certain conditions. Fins control the speed, turning ability and stability of your board.
The most popular fin configurations are Single Fins, Twin Fins, Tri-Fins or Thruster Fins, Quads and 5-Fin Sets. Surfboard Fins also come in various systems; FCS, FCS II, Futures and Standard Fin Box. It is important to know your fin system before proceeding as certain fin systems will be incompatible with another system.