Keyless, tool-free installation: Enables quick and hassle-free fin changes without grubby screws or keys
Backwards compatibility: Works with all FCS dual tab fins for seamless integration with existing equipment
Corrosion-resistant materials: Titanium tension rod and polymer barrel ensure long-lasting performance in saltwater and harsh conditions
Honeycomb lightweight composite frame: Reduces weight while maintaining flex for optimal board response
Custom adhesive cover: Prevents resin from entering the fin box during glassing, protecting internal components
Summarized by Shop
The FCS II Fin Plug – White is the genuine FCS fin box designed for surfboard manufacturing, new board construction, and professional surfboard repairs. Featuring the FCS II keyless retention system, these plugs allow fins to be installed and removed quickly while maintaining a secure, high-performance fit.
The FCS II installation system
