Developed by Sean Mattison for Von Sol surfboards, the FCS Knubster is essentially a center keel fin that can be added to any quad set-up. The fin will increase drive and provide directional control through turns, without sacrificing speed, flow, or the freedom of movement typically associated with a quad. The “KNUBSTER” is designed with a single tab that allows the fin to be positioned in the forward and rear center plug to cater for the individual drive requirements of each surfer.
It all started with a revolutionary idea. This idea was removable fins for surfboards. These fins made travelling easier, allowed to surfers to adapt their surfboards and maximise performance quickly. Since the release of FCS in 1994, countless surfers swear by the system.