FCS II Mayhem Pivot PC Quad Rear Fin Set-Marine-Large
Available on orders of $100 or more. Excludes boards and oversized items.
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Located in Cape Hatteras. No bots.Designed with shaper and pro surfer Matt Biolos, the Mayhem Pivot Quad Rears are a high-performance template for surfers seeking speed, tight turns, and quick directional changes. They suit boards ranging from elite performance models to versatile boards like the RNF and Puddle Jumper, particularly lower-rockered designs.
Part of the Reactor fin family, the upright template combines smooth curves, moderate tip area, and neutral sweep for an agile, responsive feel with sharp snaps and quick redirection.
The upright template enables tight turns, while the smooth curves and moderate tip provide stability and control at speed. Built for drive through the pocket, quick redirection, and clean tail release off the top.
Reactor: Built for speed, tight turns, and explosive snaps. The upright outline and smaller centre of area allow the board to pivot quickly and release cleanly off the top.
Performance Core Carbon (PCC): Performance Core construction with full-template carbon tissue reinforcement and a lightweight hex core. This creates progressive flex and drive with controlled tip stiffness, fast rebound, sharp response, and positive feedback through tight turns and rapid direction changes.
| Size | Surfer Weight |
|---|---|
| Medium | 65-80 kg / 145-175 lbs |
| Large | 75-90 kg / 165-200 lbs |
| Dimension | Medium | Large |
|---|---|---|
| Base | 4.10" / 104.0 mm | 4.10" / 104.0 mm |
| Depth | 4.26" / 108.0 mm | 4.26" / 108.0 mm |
| Area | 12.64 in² / 8,158 mm² | 12.64 in² / 8,158 mm² |
| Sweep | 32.4° |
FCS designs high-performance surf hardware and accessories—from fins to traction—focused on enhancing control, speed, and connection between surfer and board across all conditions.
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