Captain Fin Co. Chemistry Thruster

These fins are designed specifically for the Futures fin system. They will not fit into FCS or FCS II boxes.

The Chemistry Thruster is a versatile all-rounder, but it really shines in beach breaks with tight, punchy pockets. The balanced template provides enough drive for speed while remaining loose enough for quick, responsive turns.

The honeycomb core makes the fins lightweight and provides a medium flex pattern. This construction is generally more forgiving than solid fiberglass, offering a lively, snappy feel that helps you generate speed through turns.

The Medium size is typically recommended for surfers weighing between 145 and 195 pounds (65-88 kg). If you are on the lighter or heavier end of that spectrum, you might find a Small or Large fin offers better control.

A 50/50 foil is symmetrical on both sides of the fin, which provides a very stable and predictable feel. It is the standard for thruster setups, ensuring consistent water flow and reliable hold throughout your maneuvers.