Can be added to any quad set-up. Increase drive and provide directional control through turns.
**Popular amongst river surfers as a single addition to a twin fin setup or as rear fins as a quad**
- Developed by Sean Mattison for Von Sol surfboards, the FCS VS KNUBSTER is essentially a centre 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 centre plug to cater for the individual drive requirements of each surfer.