FCS II Reactor PC Carbon + Aircore Tri-Fin Set Button Shirts The base is wider than

The base is wider than the depth which isn't seen in your typical thruster fins

Stash it in the hidden ankle cuff key pocket

M-7 Large 4

68"² [9469mm²]

The FCS M Series Glass Flex Tri Fin Set are designed to be fast and smooth with better hold and more squirt through turns

FCS II Reactor PC Carbon + Aircore Tri-Fin Set Button Shirts The base is wider thanThe FCS II Reactor Tri Fin Set utilizes a superior blend of carbon tissue and an ultralight AirCore construction to deliver a more user friendly flex to achieve faster start up acceleration, and a smoother feel through turns. These fins are designed for speed and tight turns, with added tail release. The upright template allows for tighter, more acute directional changes. A smaller center fin for increased pivot and tail release. Ideal for surfers who