FCS II Mayhem Pivot Performance Core Carbon Quad Rear Fins

Your new go-to template for low-rocker funboards and beach-break fun.

Overview

Designed in collaboration with shaper and professional surfer Matt Biolos, the Mayhem Pivot Quad Rears are a refined performance template built for surfers who want speed, tight turns, and quick direction changes. Suitable for a wide range of boards, from elite performance models to versatile everyday boards like the RNF and Puddle Jumper, this fin prioritizes agility and responsiveness, particularly on low-rocker boards.

Part of the Reactor fin family, the Mayhem Pivot features smooth curves, a moderate tip area, and a neutral rake angle, delivering a fluid feel while still allowing for sharp top-turn snaps and quick direction changes. Inspired by the Reactor template, it is designed for beach-break conditions where speed and tight turns are essential.

The new understated aesthetic complements the signature design, combining performance and style for surfers looking for a responsive, speed-oriented fin.

What are this fin’s features and benefits?

• Designed in collaboration with Matt Biolos
• Upright template for tight turns and quick direction changes
• Moderate tip area and neutral rake for a fluid, responsive feel
• Built for speed, snaps, and tail release
• Ideal for beach breaks and low-rocker performance boards

What kind of performance feel does this fin offer?

The Mayhem Pivot delivers fast, responsive, and agile performance.

The upright template lets surfers confidently perform tight, decisive turns, while the smooth curves and moderate tip provide stability and control in high-speed maneuvers. This fin excels at generating drive in the pocket and making quick direction changes in top turns, making it ideal for surfers who want to attack critical sections of the wave with speed and precision.

The result is a lively, controlled, highly responsive fin, perfect for performance sessions in beach breaks.

Which template is this fin based on?

Fin template: Reactor; built for speed, tight turns, and explosive snaps.

The Reactor template features an upright profile with a smaller center area, allowing the board to pivot quickly and release cleanly in top turns.

This makes it an ideal template for surfers who prefer fast surfing, decisive turns, and progressive maneuvers.

What are the ideal conditions for this fin?

Beach breaks.

It performs especially well in:

• Hollow waves
• Fast, powerful beach breaks
• More critical surf conditions

Board compatibility

• Designed for the FCS II fin system.
• Recommended for performance shortboards with moderate to low rocker.

What is this fin’s construction?

Performance Core Carbon!

Performance Core Carbon (PCC) combines proven Performance Core construction with carbon-fabric reinforcement across the entire template. Made using a multi-layer RTM process and a lightweight hexagonal core, this reliable construction delivers progressive flex, drive, and consistent performance in a wide range of conditions. Extending the carbon fabric across the entire template adds controlled stiffness, particularly in the tip, complementing the fin’s more upright profile with quicker rebound, a sharper response, and greater feedback through tight turns and quick direction changes.

Frequently asked questions

What boards is the Mayhem Pivot designed for?
Low-rocker boards, from elite performance models to versatile boards like the RNF and Puddle Jumper.

In which conditions does it perform best?
Fast, powerful beach breaks where tight turns and quick direction changes are needed.