FCS II surfboard fins * Size: Medium * Thruster fin setup * Elliptical centre fin * Fin foil template * Designed for FCS II fin system * FCS detailing * Colour: Smoke The H4 fin set surfs and looks different from any other fin. Precision Swiss design paired with an evolved template allows for unrivalled control and predictability at high speed. It is almost intuitive how the H4 performs. When you initiate a turn, the fins will work with you. It provides speed when needed and then release at the right transition point. The science behind the templates, materials, and foils is complex. However, every part of this fin was engineered to create a simple synergy between fin and surfboard, rider, and wave.