F4 FOILS Wing

F4 FOILS Wing We design high-performance foils for wing, surf and downwind, built through real testing on the water.

About us
The bug bit after the America’s Cup in San Francisco. F4 has become obsessed with hydrofoils and been designing some of the world’s best for Windsurf, Windwing, Surf and Kitesurfing. We design and manufacture foils for F4 as well as several other brands and have become known as the design leaders in many different segments. Our focus is simple – to design the best hydrofoils possible for

each application. You can meet our core team on the beaches of San Francisco every day all season long. Values
Customer Centric – Our customers are what we are here for. Listen – Delivering products from the highest level of racing to consumers requires careful collaboration with you our end-users and listening and incorporating your feedback and needs into our products. Make it happen – we know how valuable your time on the water is. And we promise you to do our best to make sure you have enjoyable time on the water with the most advanced product on the market. The Environment – Our sport bring us in physical contact with nature. Our commitment is to protect it and enrich it so we can leave it better than we found it and allow future generations to enjoy it just as much as we do today. History
In 2008 Al Mirel, Chris Radkowski, and Ben Bamer – windsurfing and kitesurfing friends started F4 as a windsurfing fin company. Together they brought decades of experience with the sport, racing pedigree, engineering knowledge, Phd level math skills and endless enthusiasm and passion for the water sports. As the sports evolved and hydrofoiling came to the scene in 2013 we were the pioneers that turned it from a dream into the fastest growing market and the phenomenon that brought life back into windsurfing and extended into many other water sports.

09/07/2026

, yeah, this is what we’re talking about. 🔥
📸

09/06/2026

From figuring it out to flying it, . 💛 Worth every 💩 along the way.

Thanks for sharing!

09/01/2026

Cynthia’s take on the Hammerhead 510 and Piranha 600.

Daily decisions are tough, but they must be made. Specially when it comes to foils and p**n. Two foils with very different styles, but both crazy fun for downwind foiling.

The Hammerhead 510 has surprisingly excellent low end paired with unstoppable speed, glide and pump. The shocking part is that it is really fun to carve GS surf turns on, even with such a high AR. It’s the foil Edo Tanis used to win the entire Triple Crown of Hawaiian downwind races, back in July. He was on a tiny downwind race stabilizer, but I tame it down with a 138 surf stabilizer.

The Pirahna 600 is a sassy little skateboard with enough zippy speed for Maliko. It turns the 9 mile run into a 12 mile skate park! Still plenty of low end, glide, pump and speed, but with a rail to rail, I gotta rip surf personality!

Don’t take my word for it, check out clips from Hood River.

Which one would you choose as your dance partner?

Cynthia Cynbad Brown🔥🙌🏽

08/26/2026

on the 744 Piranha. Gorge is looking good. 🔥🔥

Kite Puerto Rico

08/23/2026

An incredible spot to put the new MYA V4 through its paces. 😍 Alexander Pepelasis — thanks for the feedback! 🙏🏽

08/19/2026

Downwind in Hawaiʻi with Shae Foudy, before Hurricane Lala passed through the islands. 🌊

Shae on the Hammerhead 585 + XS 125 tail.🔥

08/15/2026

putting the V2 Downwind 110 XS to work🔥

08/11/2026

× F4 Piranha 600 🔥😮‍💨 Hood River delivering🤙🏽

Kite Puerto Rico

08/11/2026

Straight from US Nationals to the Worlds. Let’s go, Kai! 🌍🦾

Gear:
R Board V2
108 Race Mast
502 Wahoo

Shot by

Address

Woodside, CA
94062

Telephone

(650) 224-3315

Website

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