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FCS II CI Upright Quad Rear Fin Set
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FCS II CI Upright Quad Rear Fin Set

FCS II CI Upright Quad Rear Fin Set

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From $31.91

Original: $91.18

-65%
FCS II CI Upright Quad Rear Fin Set

$91.18

$31.91

The Story

Our best-selling CI Upright template is now available in quad rears.

  • Performance
  • Material
  • Size
  • 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 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
    • Designed 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 Side 4.39 111.4 4.59 116.4 15.04 9700 30.3° Flat
    MED Ctr 4.39 111.4 4.59 116.4 15.04
    9700 30.3° 50/50
    MED Q-Rear 4.04 105.1 4.17 108.4 11.70 7929 33.3° Flat
    LRG Side 4.50 114.2 4.70 119.3 15.79 10190 30.3° Flat
    LRG Ctr 4.50 114.2 4.70 119.3 15.79 10190 30.3° 50/50
    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.



    FCS II CI Upright Quad Rear Fin Set - Image 2

    Details & Craftsmanship

    Every detail has been carefully considered to bring you the perfect product.

    Description

    Our best-selling CI Upright template is now available in quad rears.

    • Performance
    • Material
    • Size
    • 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 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
      • Designed 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 Side 4.39 111.4 4.59 116.4 15.04 9700 30.3° Flat
      MED Ctr 4.39 111.4 4.59 116.4 15.04
      9700 30.3° 50/50
      MED Q-Rear 4.04 105.1 4.17 108.4 11.70 7929 33.3° Flat
      LRG Side 4.50 114.2 4.70 119.3 15.79 10190 30.3° Flat
      LRG Ctr 4.50 114.2 4.70 119.3 15.79 10190 30.3° 50/50
      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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