Fin Plugs

Fin plugs and fin boxes are the system that lets you install and remove the fins on your surfboard. It was FCS who revolutionised the market in 1994 with this innovation, and today FCS X2 is still the most popular, although there are alternatives such as M-Fins, Futures and FCSII. The choice of fin system depends on the fin box your board has: each type of plug (Dual Tab FCS, Single Tab Futures, Click Tab FCSII, US Box) requires its own compatible plug and fin. At Mundo‑Surf we stock all brands and systems so you can find the replacement or installation accessory you need.

FCS plugs and fin boxes: guide to systems for installing fins on your board

What are plugs and fin boxes? FCS, Futures and M‑Fins systems explained

Fin boxes, also called plugs, are plastic inserts in the surfboard that allow you to mount and remove the fins. There are several systems: Dual Tab (FCS X2 type), Single Tab (Futures type), Click Tab (FCSII type) and US Box for longboards. The first question when someone looks for a plug is which system their board has, because compatibility depends exclusively on the original fin box.

Do FCSII plugs need screws to secure the fin?

FCSII fin boxes do not require screws in theory, but in practice many riders use an FCS‑type screw to prevent the fin from coming loose on impact. It is worth bearing this in mind if you surf in demanding conditions or with larger‑area fins.

What installation and repair tools do I need for plugs and fin boxes?

Sandpaper is essential for working a pre‑shape or a board repair, as it removes imperfections and final resin layers. On top of that it is advisable to add a specific key to install the fin boxes correctly and spare FCS‑type screws when needed. In the water, that translates into a well‑secured fin and a board with a longer lifespan.


Filter (30 products)
Active filters

Categories

Reset this group

Price

€1.00 - €36.00

What our customers think:

4,7/5

Based on 535 reviews

4,6/5

Based on 507 reviews

Product added to wishlist