FCS II Al Merrick Thruster

These fins are designed for high-performance shortboards that feature deep concaves and moderate to high rocker. They perform best on boards built for speed and maneuverability in steeper, more demanding wave conditions.

The smaller center fin is specifically designed to reduce drag and allow for a quicker release during turns. This makes it easier to break the tail loose when you are surfing critical sections or performing sharp, aggressive maneuvers.

No, these use the FCS II tool-less system. You can simply click them into your fin boxes by hand, making it easy to swap them out at the beach without needing a key.

These are high-performance fins engineered for advanced surfing, specifically for driving through hollow waves and punchy beach breaks. If you are still learning, you might find them too responsive or 'twitchy' compared to a more stable, neutral fin template.

Performance Core construction uses a multi-layered resin transfer molding process to create a consistent, progressive flex pattern. This means the fin feels stiff at the base for drive but flexes more toward the tip, giving you a predictable, snappy feel through your turns.