FCS II Reactor Performance Core Tri Fin Set - Charcoal / Black - L
FCS II Reactor Performance Core Tri Fin Set - Charcoal / Black - L, The FCS II Reactor fin is a fast reacting fin for performing tight radius turns. Designed for surfers who like to stay tight in the pocket and perform aerial maneuvers. This fin is designed to be used exclusively with the FCS II Fin System, and will not fit in the traditional FCS Dual Plug System.Performance Core fins are resin transfer molded with fiberglass and resin around a hex core. Intermediate response. 55% glass.