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Built for performance, the FCS II Matt Biolos Mayhem PC Carbon Quad Rear Fin Set delivers maximum speed, drive, and control when surfed as a quad. The 80/20 foil allows for smooth, responsive turns while maintaining stability and flow through carves, giving surfers the confidence to push hard in all conditions.
| Size | Fin | Depth | Base | Area | Sweep | Foil |
| Medium | Quad Rear | 4.26" | 4.10" | 12.64"² | 32.4° | 50/50 |
| Large | Quad Rear | 4.26" | 4.10" | 12.64"² | 32.4° | 50/50 |
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
US$40
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