FCS Matt Biolos Fin Set

These fins are designed for the FCS 1 fin system. Please check your surfboard's fin boxes to ensure they are compatible with the FCS 1 standard before purchasing.

The Matt Biolos Tri Set is highly versatile. Thanks to the flat foil design and carbon construction, they perform well in both tight pocket surfing and open-face conditions, offering a reliable balance of drive and maneuverability.

The carbon construction makes these fins stiffer and more responsive than standard fiberglass or composite options. This added rigidity helps the board hold speed through turns and provides a more immediate, lively feel when you push hard off the bottom.

The Medium size is specifically optimized for surfers weighing between 145 and 175 pounds (65-80 kg). If you fall within this weight range, these fins will provide the intended balance of hold and release.

The flat foil on the front fins promotes consistent water flow, which creates a predictable, reliable feel. This design is ideal if you want a fin that reacts quickly to your inputs without feeling overly stiff or locked in.