FCS II Matt Biolos Tri-Fin

These fins are specifically engineered for high-performance shortboards and hybrid models. Their design excels on boards that require a balance of drive and release, particularly when you are surfing in critical, punchy conditions.

The Performance Core Carbon construction creates a stiffer, more responsive feel compared to standard fiberglass or plastic fins. This stiffness translates to immediate energy transfer, giving you a lively, snappy sensation through turns and quick release off the top.

No, these are FCS II fins, which are designed for the tool-less FCS II fin system. While they are backward compatible with older FCS dual-tab boxes if you use grub screws, they are optimized for the click-in, click-out convenience of the FCS II system.

The wide base provides a solid foundation for generating drive and speed, while the tapered tip allows for tighter, more aggressive turns. This combination makes it easier to hold your line through powerful sections while still maintaining the agility needed for quick, vertical maneuvers.

These fins are generally geared toward intermediate to advanced surfers who are looking to push their performance. Beginners usually benefit more from fins with a more forgiving, neutral template and construction, whereas this set is designed for aggressive, high-performance surfing.