The sleek, heavily raked Flex is a cult favourite for a lot of our regular customers. It may look a little unorthodox, but the Alkali Flex will feel perfectly at home once matched with the right board.

Thanks to the extreme rake and broad base, the Flex will load energy through the entire fin and release out of turns quickly, offering sweet bursts of speed and projection.

We recommend this fin for logs, hulls and wide tail mids. Longboarders love the way it helps hold into the face when noseriding.
When choosing the right size for your surfboard, go at least one inch bigger than you would for a standard fin. These fins are looser than you would expect due to the low overall area and the flex factor. The crew have been known to run 11” Flex in six-foot hulls to significant effect.

Extreme tip rake that holds in the wave face when up high. Low surface area for loose turns and unique projection into the pocket.
Incredible for nose riding and lends to beautiful wide arcs, minus the stiffness of a more upright fin.