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FCS II H4 Small Tri Fin Set

sku# 180862
FCS - II H4 Small Tri Fin Set
Model Info
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Product Info

A fin like you've never seen before. The FCS II H4 Small Tri Fin Set is Swiss engineered, creating a perfect synergy between geometry and HI-FI materials. With two radically different side and center fin templates, the H4s strike the perfect balance of speed, flow, responsiveness and control.

Product Details


High Density Uni Directional Carbon FiberLight & super strong with custom orientation to transfer more of your energy into speed than any other fin.

Precision Swiss EngineeredCreates perfect synergy between fin geometry & HI-FI materials, giving smooth & predictable feel.

Dynamic Trailing EdgeInternal composite morphs under extreme load, enabling the fins to be pushed harder without sliding out.


Side FinsBase: 4.36" / Depth: 4.34" / Area: 14.29in² / Sweep: 38.3˚

Center FinBase: 4.29" / Depth: 4.49" / Area: 13.82in² / Sweep: 37.2°


Side Fins - Flat FoilA flat inside face combined with a convex outside face. The traditional flat sided foil offers an even combination of drive, pivot, and hold. Provides a very consistent, reliable feel over a wide variety of conditions.

50/50 FoilA symmetrical foil used on all centre fins where both sides are convex. Even water flow on both sides creates stability and control.

Board TypesRecommended for performance shortboards with moderate-to-low rocker.

Ideal ConditionsA wide range of conditions, particularly good in critical overhead waves.

Side Fin ProfileLower section produces maximum acceleration, while hatchet like tip creates stability & control.

Centre Fin ProfileHighly raked elliptical outline reduces drag, and offers feeling of predictability when releasing through turns.

Fin Foils TemplateThicker base with tapered tip optimises flex & regulates the release of energy during rail to rial transitions.


3 Fins


  • Material: Carbon Fiber
  • Fin Category: Thruster (Tri)
  • Fin Box Compatibility: FCS II
  • Includes: 3 Fins
  • Rider Size: S (105 - 155 lbs)
Size Small
Rider Size S (105 - 155 lbs)

Other Notes

FCS products can only be shipped within the United States and Canada



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