FCS Fusion Plug - 5°

The FCS Fusion Plug – 5° is a genuine FCS Fusion fin box designed for surfboard manufacturing and professional surfboard repairs. Featuring a built-in 5-degree cant, this plug is commonly used for quad rear fins and specialized surfboard designs that require less cant than traditional thruster rail fins. The Fusion system is installed before lamination, allowing fiberglass to laminate directly over the flange for exceptional strength and long-term durability. Its integrated high-density foam base creates a strong bond with the surfboard blank while helping resist movement under heavy loads. Compatible with original dual-tab FCS fins, the Fusion system remains a trusted choice among professional surfboard builders for both new board construction and surfboard repairs. Features Genuine FCS Fusion fin plug Built-in 5° cant Ideal for quad rear fins and specialized board designs Pre-lamination installation system High-strength composite construction High-density foam foundation for added durability Compatible with original dual-tab FCS fins Ideal for surfboard manufacturing and professional repairs