FCS II Fins HI Tri Fin Set

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The 2 + 1 FCS II HI Tri Fin Set is great for adding stability and drive to longboards and SUP's while retaining performance capabilities. This extra large thruster configuration allows you to utalize the power and drive found in performance fins without losing the fluidity and smooth carves you get on a longer board. Harley's signature HI Fin set has a tool-less center fin that can be inserted, removed or adjusted in seconds creating a versatile and fun set-up that works in a huge variety of conditions.


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.


A flat inside face combined with a convex outside face. The traditional flat sided foil offers an even combination of drive, pivot and hold and provides a very consistent, reliable feel over a wide variety of conditions.

***Exclusively for the FCS II Fin System; will not fit in the traditional FCS Dual Plug System***

Tech Specs

  • Base: 4.61 in, 117mm
  • Depth: 4.99in, 1262mm
  • Area: 16.93 sq in, 10923 sq mm
  • Sweep: 34°
  • Foil: Flat


  • Size: X-Large
  • Fins in set: 3
  • Material: Performance Core


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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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