FCS II Al Merrick Thruster

These fins are designed specifically for high-performance shortboards. They perform best on boards with moderate-to-extreme rocker and deep concaves, where you need extra hold and drive to navigate steep, hollow sections.

The smaller center fin is a deliberate design choice to reduce drag and allow for a quicker, looser release during critical turns. It makes the board feel more responsive when you are pivoting off the top or snapping through the lip.

Yes, they excel in punchy beach breaks. The raked side fins provide the necessary speed and drive to get through flat sections, while the overall template gives you the stability needed for aggressive, power-based surfing.

Performance Core construction uses a resin transfer molding process that creates a consistent, progressive flex pattern. This means the fins feel reliable and predictable, offering a balance of stiffness for drive and enough flex to load up energy through your turns.

No, the FCS II system is designed for tool-less installation. You can simply click the fins into your board's fin boxes and remove them by hand, making it easy to swap setups on the beach.