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FCS Fins SF4 Stretch GF Quad - Glass

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SKU: FCS117616524

Availability: Out of stock




William "Stretch" Riedel’s signature quad set featuring cambered foil on the side fins and 50/50 foil on the rear fins.  The robust upright templates make this set fast, responsive, and stable at high speeds.  The full tip area across all fins provides quick acceleration and response.  Perfect for hollow steep waves, punchy beach breaks.  Works best with performance boards with deep concaves and moderate-to-extreme rocker.


Glass Flex has been formulated to replicate the flex and memory properties of hand layed fiberglass. Its advantages over other composite fin materials include stiffness, a more positive flex pattern (nice tip flex, little base flex) and remarkable flex memory. The precision of the injection molding process ensures the highest accuracy in geometry in each fin produced.

    Tech Specs

    Front Fins:

    • Base: 4.48 in, 114 mm
    • Depth: 4.48 in, 114 mm
    • Area: 15.15 sq in, 9776 sq mm
    • Sweep: 30.5°
    • Foil: IFT


    • Base: 3.88 in, 98 mm
    • Depth: 3.80 in, 96 mm
    • Area: 11.22 sq in, 7238 sq mm
    • Sweep: 30.7°
    • Foil: 50/50


    • Size: Large
    • Fins in set: 4
    • Material: Glass Flex


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    We understand that when purchasing gifts, returns and exchanges can be necessary, which is why for the Holidays we are extending our Return Policy so that anything purchased as a gift this Holiday Season is eligible to be returned by the end of January. If you are not 100% satisfied with your product you may return it for a full refund, or exchange by the end of the month of January 2020.

    Please make sure your wetsuit fits before taking it in the water. We are not able to take returns or exchanges on used wetsuits.

    Please reference our full Return Policy.

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