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FCS II Fins C4 Spitfire SUP Fin

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When you are covering big distances, the FCS II Fins C4 Spitfire SUP Fin holds a true and stable line for speedy progress. The high-depth design of the C4 is perfect for tracking in open water while still being able to easily edge into the next bump on downwind runs. Take pleasure in the ability to easily tweak your fin position in the water or on the beach with FCS tool-less technology. Lightweight and race ready, the C4 Spitfire SUP Fin makes for an incredibly stable and super fast open-water ride.


  • Size: 11"
  • Fins in set: 1
  • Material: Performance Core

Tech Specs

  • Base: 4.34 in, 110 mm
  • Depth: 11.13 in, 283 mm
  • Area: 51.30 sq in, 33096 sq mm
  • Sweep: 5.4°
  • Foil: 50/50


Versatile RTM construction delivers a consistent feel similar to a traditional fiberglass fin, but with the advantage of reduced weight. The stiff flex pattern extends progressively from the base through to the tip helping the surfer to maintain drive and hold through a turn. PC fins are reliable, very responsive, and can be used in a variety of different conditions.

50/50 FOIL

A symmetrical foil used on all center fins where both sides are convex. Even water flow on both sides creates stability and control.


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Returns are easy! We understand that in some situations returns or exchanges may be necessary. We also want you to be stoked on your purchase. If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order. Items must be in new condition with original tags and packaging.

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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