


FCS II Channel Islands Upright Performance Core Quad Rear Fins - White Flame
Description
Designed by Britt Merrick, the CI Upright Quad Rears are shaped to pair seamlessly with the upright CI side fins.
Overview
Featuring a neutral-raked template, they deliver a solid balance of control and stability while still allowing for tight, pivot-style turns. The 80/20 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
- 80/20 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 deep concaves and moderate-to-extreme rocker.
Fin Family
Quad: Carver.
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.
Fits well with

FCS II Channel Islands Upright Performance Core Quad Rear Fins - White Flame
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