For fast on-rail surfing. Produces exceptional speed and drive down the line. Overview - Designed for radical, progressive surfing. - The raked side fins produce exceptional speed and drive. - Based on the 'AM' fin template. - On the Medium & Large templates a smaller centre fin offers quick release through turns.Ideal Conditions- Hollow steep waves, punchy beach breaks.Board Types - Performance boards with deep concaves and moderate-to-extreme rocker. - Will fit the FCS II Fin System when used with grub screws and the FCS Infill Kit.