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  • FOIL
    FOIL Carbon Prepreg Hydrofoils
  • FLY!
    FLY! Fly Above the Water
  • FINS
    FINS Precision Fins For Windsurfing
  • Flex
    Flex Advanced Composite Design
  • FIT
    FIT Precision Manufacturing
  • Finish
    Finish The Winners Choice

About F4

F4 is designing and building racing hydrofoils and fins for kite boarding and windsurfing. F4 has recently introduced full carbon prepreg hydrofoils for kiteboard racing after an extensive development program.  F4 hydrofoils are fast, yet easy to ride, contact us for more details.

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F4 FOILS and FINS - NEW FOR 2014

  • Kiteboard Race Foils
  • Windsurf Foil Windsurf Foil
  • Heavy Air Slalom New high aspect design for heavy air slalom

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F4 is pleased to annouce new hydrofoils and windsurfing and kitesurfing. Please stay tuned as we start to ship our new products. Please connect with us on facebook or send us an email to This email address is being protected from spambots. You need JavaScript enabled to view it.  to share our passion about high performance fins and foils for kitesurfing and windsurfing. Click below to learn more about our products or contact us via email to place an order or share your thoughts wor ith us.

F4 Fins Products +


 F4 D2 Slalom Fin QuiverA quiver of fins

Slalom Fins

The F4 D2 slalom fin is designed to provide speed and control in a wide range of conditions. F4 has a new Lightwind Slalom and a new Heavyair Slalom fins. Sizes, rake and flex can be customized - 20 - 80cm lengths available.

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  BB70The BB

Formula Fins

F4 has developed three formula fin designs, each with a different planform and foil section. The GTE is a hybrid eliptical planform and our latest fin. The BB is an eliptical design optimized to enable planning in lightwind. The CR is based on a planform with a straight trailing and designed for medium to strong winds. Size, configuration, and lengths 40-85cm are available.

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2013 slalom 640Kite Race Fins

Kite Course Racing

The F4 kite fins are based on our proven slalom designs with specific rake and cant angles available. Please send us a message for specifics

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Kite Hydrofoil

Hydrofoils for Windsurfing and Kiteboarding

F4 is building easy to ride, stable, stiff, and fast hydrofoils for kiteboard racing and windsurfing. F4 hydrofoils are constructed using the lightest and stiffest most consistent process possible using aerospace grade carbon prepreg materials

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