Everything you’ve ever wanted to know about your surfboard fins and then some. As your surfing progresses, you can begin experimenting with your fins to really get the most out of your boards. The slightest changes can sometimes have the biggest effects. Welcome to the wonderful world of surf fins.


Figure out the ins and outs of fin positioning and set up. Learn how tiny tweaks can make a world of difference in how your board performs and responds.


Quick answers to some of the most common questions about surfboard fins.

Are surfboard fins universal?

Unfortunately, surfboard fins are not universal. When buying fins, you’ll need to make sure the fin base matches the fin box system in your board. Learn more about fin systems.

Are fin keys universal?

If you’ve got surfboard with FCS or Futures fins, you can use the same size hex key to tighten and remove the grub screws on either one. Learn more about fin screws and hardware.

How are surfboard fins made?

There are a few different ways to make fins. Some popular ones include resin transfer, hand layup and foiling, and CNC. Learn how to make your own fins.

What are surfboard fins made of?

Surfboard fins are made from a variety of materials. Some common materials for fins include fiberglass, plastic, foam core, wood, and bamboo. Learn more about fin materials and product methods.

How do fins work?

Fins provide you with control. They create lift and influence drive. Read more about how fins work.

Why are my fins humming?

Your fins are humming because they don’t know the tune, sort of. Humming fins are a result of turbulence from imperfections on the fin, and just need to be tuned – a little sanding can usually fix it. Learn how to fix a humming fin.

What fins should I get?

What fins you should surf depend on a variety of factors including the system you have, the setup you have, the width of your board’s tail, your weight, and the type of waves you’ll be riding and the surfing you’ll be doing. Learn more about the best fins for you.

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