FCS II CI Upright Quad Rear Fin Set

Designed by Britt Merrick, the CI Upright Quad Rears are shaped to pair seamlessly with the upright CI side fins.

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  • Overview

    Designed by Britt Merrick, the CI Upright Quad Rears are shaped to pair seamlessly with the upright CI side fins. Featuring a neutral-raked template, they deliver a solid balance of control and stability while still allowing for tight, pivot-style turns. The 50/50 foil enhances directional control and confidence, making this set a reliable choice for surfers looking to fine-tune their quad set

    • A collaboration with Channel Islands Surfboards, the CI Upright is designed for speed & tight turns
    • A template that comes to life in punchy hollow waves, but also suit conditions where you need that start-up speed to get going.
    • Neutral-raked template developed by Britt Merrick to work with upright CI side fins
    • Provides control and stability, while still allowing for tight pivot turns
    • 50/50 foil provides stability and directional control
    • Quad Rear (2 fins) set

    Ideal Conditions

    • Hollow steep waves, punchy beach breaks

    Board Types

    • Designed to fit the FCS II Fin System.
    • Performance boards with relaxed rocker
    • Deisgned for CI performance + hybrid models

    Fin Family

    • Quad: Carver
    ciupright
  • Performance Core 

    Performance Core (PC) fins are made using a multi-layered resin transfer molding process. The flex pattern in PC fins extends progressively from the base through to the tip, helping the surfer to maintain drive and hold through a turn. This versatile fin material is light, and can be used in a variety of different conditions.


  • MEDIUM (65Kg - 80Kg / 145 - 175 Lbs)
    LARGE (75Kg - 90Kg / 165 - 200 Lbs)

     Fin

    Base (inches)

    Base (mm)

    Depth (inches)

    Depth (mm)

    Area (inches)

    Area  (mm)

    Sweep Deg°

    Foil

    MED Q-Rear 4.04 105.1 4.17 108.4 11.70 7929 33.3° Flat
    LRG Q-Rear 4.14 105.1 4.27 108.4 12.29 7929 33.3° Flat

    View the FCS Fin Data page for Base/Depth/Area/Foil information.


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