FCS Single Knubster Fin

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Overview Developed by Sean Mattison for Von Sol surfboards, the FCS VS Knubster is a small center fin designed to be added to any quad setup. It enhances performance by increasing drive and improving directional control through turns—without sacrificing the speed, flow, or freedom that quads are known for. Featuring a single tab design, the Knubster can be positioned in either the forward or rear center plug, allowing surfers to fine-tune their setup based on personal preference and desired drive characteristics. Ideal Conditions Performs in a wide range of conditions Suitable for beach breaks to point breaks Board Types Compatible with all board types Fits FCS II Fin System when used with grub screws and FCS Infill Kit Show more