Designed to fit the FCS II plug system — easy installation and secure fit for quick fin swaps.
Performance Glass construction (fiberglass) ensures stiffness and stability under high loads — great for aggressive surfing or bigger waves.
Lower fin depth maintains maneuverability — ideal for twin-fin fish boards, funboards, and other twin-fin surfboards.
Moderate sweep (rake), full tip and long base deliver strong drive through turns while maintaining looseness and responsiveness
High-area twin-fin design gives increased drive, speed, and powerful rail-to-rail performance.

The FCS II Harley Ingleby Surfboard Twin Fin Set is engineered for surfers looking for a powerful, drive-oriented twin-fin setup with maximum responsiveness and control. These high-area twin fins deliver plenty of drive and speed — perfect for surfboards that thrive on flow and momentum, like fish boards, funboards, or twin-fin hybrids. Moderate rake, a full tip and a long base give you the ability to push hard through turns while the lower depth keeps the ride loose and maneuverable. Constructed from sturdy Performance Glass (fiberglass), the fins maintain flex integrity even under heavy loading, so you get consistent hold and drive in demanding surf. Plus, because they’re built for the FCS II plug system, swapping them in and out is quick and hassle-free. A great fin set for surfers that want speed, drive, and smooth, dynamic carving on twin-fin boards.