FCS II to FCS1 Fin Box Adapter

FCS II to FCS1 Fin Box Adapter

Regular price €7,95 Tax included.
Unit price per

Convert any FCS II surfboard into a standard FCS1 (Double Tab) setup.
The Eisbach Riders FCS II Fin Box Adapter allows you to use traditional FCS1 fins in surfboards equipped with the newer FCS II fin system. Simply insert the adapter into the fin box and lock your FCS1 fins in place using standard fin screws.

Perfect for surfers who want to keep using their existing fin quiver, test different fin templates, or replace broken fins without buying a full new set.

Why this adapter is essential

  • Universal compatibility
    Works with all FCS II fin boxes and all FCS1 (Double Tab) fins.

  • Quick + tool-free installation
    Insert the adapter, slide in your fin, tighten the screws – ready to surf.

  • Cost-saving
    Keep using the fins you already own instead of upgrading everything to FCS II.

Ideal for

  • River surfers

  • Anyone wanting more flexibility in their fin setup

Stay flexible and surf any fin you want – with one simple adapter.