Fin Shaper

Fin Shaper is a surf-fin brand that lets surfers customize fin designs to suit their chosen geometry and setup. Its fins are designed and manufactured in the United States, made to order, and typically have a build time of seven business days. Customers can start with a ready-made set or use the online Studio to create a custom shape by adjusting its outline, foil, and bend.

The range includes balance and drive thrusters, keel and pivot twin setups, a keel quad, and flex, glide, and rake single fins for SUPs and longboards. Available systems include FCS, FCS II, Futures, and US box, depending on the model. Listed prices start at $20 per fin, with set prices varying by configuration; the site also advertises free shipping on all fins. Fin Shaper offers guidance on selecting a size and setup, along with the option to refine a design before ordering. Customers can contact the brand by Instagram or email with questions about shapes, setups, or orders.