Performance Core Carbon Thruster

These fins are designed specifically for the FCS II fin system. If your board uses a different box system, such as Futures, they will not be compatible.

The carbon-infused material makes these fins stiffer and more responsive than standard fiberglass or plastic options. This added rigidity translates to more immediate energy transfer, allowing for explosive turns and better speed generation.

While they can be used on various shapes, they are specifically optimized for higher-volume boards with lower rocker profiles. If you are riding a very thin, high-rocker performance shortboard, you might find these fins provide more drive than you need.

This set is engineered for surfers weighing between 165 lbs and 200 lbs. If you fall outside this range, you may find the flex pattern either too stiff or too soft for your specific weight and power.

The extended base increases the surface area at the connection point, which helps generate significant drive and speed. This is particularly noticeable when you are pushing off the bottom or carving through open-face sections where you need to maintain momentum.