The FCS II Haydenshapes PC + Aircore Quad Rear Fin Set are designed to pair seamlessly with the HS thruster set, giving you the option to run a responsive quad setup. Featuring a neutral, well-balanced template, these fins are built for a smooth blend of speed, flow, and response. The 80/20 foil delivers easy turning while maintaining stability and drive through powerful carves, making them a versatile choice for performance surfing.
Fin Size Detail
| Size | Fin | Depth | Base | Area | Sweep | Foil |
| Medium | Quad Rear | 4.26″ | 4.09″ | 12.63″² | 32.4° | Cambered |
| Large | Quad Rear | 4.26″ | 4.09″ | 12.63″² | 32.4° | Cambered |
