About

I started designing fins back in 2009, when production fins on the market were no longer keeping pace with rapidly evolving board designs. Board concepts were changing constantly, along with fin configurations. In a very short time, we moved from single fin to twin, thruster, and quad setups, yet fin design was not evolving fast enough to truly support this progression.

At that point, together with designer Simone Todini (CAD design engineer and jewellery specialist), we drew a clear line and laid the foundations for a new era of wave fins. Speed and control became the core principles of the brand GAS Fins, setting a new benchmark in performance-driven fin design.

 

After ten years, in 2019, I decided to completely redesign the original fin concept. Together with Simone and another engineer, Julian Field, an expert in fluid dynamics and foil profiles, we pushed the project further. With their expertise and the huge commitment of Robbie Bense, owner of Zulu Fins, we developed what I called the Wave Fin Generation 2.0.
No compromises. The objective was clear: maximum speed, total control in all conditions, and exceptional maneuverability.
The result was the Carbon Quad Zulu—still a reference today, widely recognised as one of the fastest and most maneuverable wave fins on the market.

 

A few years later, we decided to move forward once again, expanding the range with what I call the Generation 3.0 project. This phase focused on the development of thruster and quad fins in G-10, with one clear goal: to enhance board performance by giving the rider maximum confidence in every situation. Consistency was essential — even when the wave isn’t perfect. The rider must be supported by the fins, never betrayed. Special attention was also given to usability. We introduced a box system compatible with multiple box standards, designed to be intuitive and fast, allowing riders to spend less time on the beach and more time on the water, without sacrificing technical performance or design.

 

During the production of these designs, I discovered what I can confidently call the real game changer — a concept that will redefine wave fin design forever:

 

The Generation 4.0 project
A completely new concept.
A new setup.

One that makes previous theories, designs, and even board-shape assumptions feel obsolete.

Welcome to our world of endless pure joy — where progression is not a dream, but a reality.

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Sultan Dreams Fins Generation 4.0

 

This is not an update. This is not a refinement. Generation 4.0 called also SURF PRO is a complete reset of wave fin design. A new concept. A new setup. A new way to interact with speed, control, and the wave itself. Built on experience, not trends. Designed to deliver confidence when it really matters.

Designed to leave outdated fin rules behind !

 

On our records we did find out that those fins they works 100% better on board with very low rocker so on mostly of the production boards. On boards with a lot of rocker or kick at the back you will still feel an upgrade in terms of maneuverability but you may feel a touch slow down of the board on the straight line, especially if you will ride the board flat into the water and not with one of the two rails catching.  Another big and important positive feature of this set up it is the improved upwind.

When choosing this set up here it is a simple guide for you in order to get the correct size and set up.

​You have two options. Going 50/50 using your currently back fins or going full in with the real game changer.

Here it is the “all in” guidelines: 

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° We did create a front fin size that goes along with your body Weight/Size. Once you fit into that window  then you can choose up to one size bigger or smaller depending from the board size. In case it has to be used it for trifin set up you should only go 1 or 2 sizes up.
Example: a 90kg will use the L as reference and M and XL as their up and down for quad set up and L, XL and XXL for the tri fin set up.

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° In case you want to go for the 50/50 set up we recommend you to choose the smaller sizes only like XXS and XS. Still it will help the bottom turn but definitely will not give you that WOW feeling of what it should be. Speedwise on straight line it will be a touch better than the full in.

° Once you have chosen the correct front fin size, you must also know the front box angle (Toe-In) of your board. This is extremely important — otherwise the fin will not work properly and will only create drag. These fins feature an asymmetrical profile, and the ideal toe-in range is around 2°. Any measure above 2.5° or below 1.5° could create some unwanted drag especially on the bigger sizes. We offer 0°, 1°, and 2° toe-in already in our fins models. For the right Toe-In Angle check our website.

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° Now it is time to choose the back fins. The biggest sizes usable are the 14,5. The front sizes have quite a lot of area and this means that you have to use a smaller back fin in order to compensate the area in the front and to be in line with your normal set up where the back fins were much bigger than you front fins. A tab with area in cm² will clarify you all better. If you going for the 50/50 option you can use up to 16.

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GET READY FOR THE NEXT LEVEL IN WAVE RIDING without making any progress on personal skills !

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Andrea Rosati