Developed by Matt Biolos, the FCS II Matt Biolos MB PC Carbon Quad Rear Fin Set are designed to pair with his upright side fins, creating a loose and lively quad setup. Perfect for beach breaks and everyday waves, this set delivers a fast, responsive feel while still maintaining stability and flow through carves. The 80/20 foil encourages smooth, easy turning with added control, making it a versatile option for surfers looking to get the most out of their quad.
Fin Size Detail
| Size | Fin | Depth | Base | Area | Sweep | Foil |
| Medium | Quad Rear | 4.16″ | 4.02″ | 11.54″² | 33.3° | 80/20 |
| Large | Quad Rear | 4.16″ | 4.02″ | 11.54″² | 33.3° | 80/20 |
