From FCS

Overview

• Developed by Sean Mattison for Von Sol surfboards, the FCS VS KNUBSTER is essentially a center 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 to the individual drive requirements of each surfer.

Ideal Conditions

• A wide range of conditions from beach breaks to point breaks.

Will fit the FCS II Fin System when used with grub screws and the FCS Infill Kit.