Surfboard Fins

Dial in your board with the right setup from Thalia Surf Shop's surfboard fins collection. We carry single fins, twin sets, thruster sets, quads, and specialty templates from True Ames, Captain Fin, and the other fin brands and systems we carry. Whether you are tuning a log, a fish, or a high performance shortboard, the right fins change how a board feels under your feet. Not sure what suits your outline, our Laguna Beach team is happy to help. New templates and restocks come in regularly.

9 products

Availability

Price
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True Ames Greenough 4A Surfboard Fin, Volan
True Ames Greenough 4A Surfboard Fin
from $100.95
from $100.95
True Ames Greenough 4A Surfboard Fin, Clear
True Ames Greenough 4A Surfboard Fin
from $87.95
from $87.95
BLACK
True Ames Greenough 4A Surfboard Fin
from $87.95
from $87.95
True Ames Greenough 4A Surfboard Fin
from $88.00
from $88.00
$88.00
True Ames Greenough 4A Surfboard Fin, Rotten Avocado
True Ames Greenough 4A Surfboard Fin
from $96.95
from $96.95
SOLD OUT
True Ames TA Thruster Surfboard Fin
$130.00
$130.00
$130.00
Gato Heroi Model P 10"Surfboard Fin, Jade
Gato Heroi Model P 10"Surfboard Fin
$134.95
$134.95
$134.95
SOLD OUT
Gato Heroi 9.75" C Fin Surfboard Fin
$134.95
$134.95
$134.95
SOLD OUT
Gato Heroi 9" T Fin Surfboard Fin
$134.95
$134.95
$134.95

FCS or Futures, which do you need?

Fins are not universal. Your board has either an FCS or a Futures fin box, and your fins must match that system. FCS II fins click in tool free, while original FCS and Futures use a key and screw. Check your board's boxes before you buy, and if you are shopping a new surfboard, note which system it takes.

Setups: thruster, twin, quad, single

A thruster (three fins) is the all rounder, with control and predictability in most waves. A twin is loose and fast, perfect for fishes and small surf. A quad holds in steeper, hollower waves while keeping speed. A single fin brings classic glide and drawn out lines on longboards and mid lengths.

Sizing by weight

Most fin brands size by rider weight, so small, medium, and large templates map to weight ranges. Heavier surfers want larger fins for hold, and lighter surfers want smaller for easier release. Round out the kit with traction or wax and a leash.

Frequently asked questions

How do I know if my board uses FCS or Futures fins?
Look at the fin boxes on the bottom of your board. Futures uses a single long box per fin, while FCS uses two small plugs per fin (FCS or FCS II) for the side fins. The fin system is fixed to the board, so your fins have to match it, and they are not interchangeable without an adapter.
What fin setup should I ride?
A thruster (three fins) is the versatile default with balanced drive and control. Twins are fast and loose for small wave fishes, quads hold and accelerate in steeper surf, and single fins give classic glide on longboards and mid lengths. Many surfers keep more than one set to switch by conditions.
What size fins do I need?
Fins are sized by rider weight, and each brand publishes a chart mapping small, medium, and large templates to weight ranges. Heavier surfers generally want larger fins for hold and drive, and lighter surfers want smaller fins for easier, looser release.

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