






FCS
FCS II AM PC Tri-Quad Fins
Configuration
Size
The FCS II AM PC Aircore Tri-Quad Fins are designed for radical, progressive surfing in hollow steep waves and punchy beach breaks. This 5 fin set features ultralight AirCore technology with a pressed polyurethane foam core, reducing weight while allowing for total flex manipulation. The Al Merrick template uses raked side fins for speed and drive, paired with a smaller center fin for quick release through turns.
These fins are ideal for performance boards with deep concaves and moderate to extreme rocker. Designed specifically for the FCS II Fin System, they offer a lighter, more responsive feel for high performance maneuvers.
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