The FCS II Harley Ingleby Longboard Tri Fin Set is a template that delivers maximum speed and drive for powerful surfers. World Longboard Champion Harley Ingleby’s Athlete Fins. Ideal for performance longboards, surf SUP’s, and 2 + 1 set-ups and side fins are designed to be used in the FCS II system.
Fin Size Detail
| Fins | Depth | Base | Area | Sweep | Foil |
| Sides | 4.99″ | 4.61″ | 16.93″² | 34° | Flat |
| Single | 5.27″ | 4.84″ | 18.5″² | 32.1° | 50/50 |
