FCS Al Merrick Thruster

These fins are designed for performance boards that feature deep concaves and moderate-to-extreme rocker. They are specifically engineered to complement boards that need extra drive and responsiveness in high-performance conditions.

AirCore technology uses a pressed polyurethane foam core to significantly reduce the fin's weight without compromising its strength. This lighter construction makes the board feel more lively and responsive under your feet, especially during quick transitions.

The smaller center fin is a deliberate design choice to reduce drag and allow for a quicker, looser release during turns. This setup gives you the stability and drive of a thruster while maintaining the maneuverability needed for radical surfing.

No, these are FCS II fins. They are designed for the FCS II tool-less fin system, which allows you to insert and remove them without needing a key or screws.

While they can handle a variety of conditions, they truly excel in hollow, steep waves and punchy, powerful beach breaks. If you are surfing mostly soft or weak waves, you might prefer a fin template with more area to help generate speed.