FCS II Mayhem Pivot Performance Core Carbon Quad Rear Fins
Model: FCS Reactor
Construction: PC Carbon
Fin set: Quad Rear
Fin base: FCS II
Your new go-to template for low rockered fun boards and beach break fun.
Overview
Designed in collaboration with shaper and pro surfer Matt Biolos, the Mayhem Pivot Quad Rears is a refined high-performance template built for surfers who want speed, tight turns, and quick directional changes. Suitable for a wide range of boards—from elite high-performance models to versatile everyday boards like the RNF and Puddle Jumper—this fin emphasizes agility and responsiveness, particularly on lower-rockered boards.
Part of the Reactor fin family, the Mayhem Pivot features smooth curves, a moderate tip area, and a neutral sweep angle, delivering a smooth feel while allowing for sharp snaps off the top and rapid turn redirection. Inspired by the Reactor template, it is designed for beach break conditions where speed and acute turning are essential.
The stealthy new aesthetic completes the signature design, pairing performance with style for surfers seeking a responsive, speed-oriented fin.
What are the fin's Features & Benefits?
- Designed in collaboration with Matt Biolos
- Upright template for tight turns and quick directional changes
- Moderate tip area and neutral sweep for smooth, responsive feel
- Built for speed, snaps, and tail release
- Ideal for beach breaks and lower-rockered performance boards
What is the fin's Performance Feel?
The Mayhem Pivot provides fast, responsive, and agile performance.
The upright template allows surfers to perform tight, acute turns with confidence, while the smooth curves and moderate tip ensure stability and control during high-speed manoeuvres. This fin excels at generating drive through the pocket and quick redirection off the top, making it ideal for surfers who like to attack critical sections of the wave with speed and precision.
The result is a fin that feels lively, controlled, and highly responsive, perfect for performance-focused beach break sessions.
What is this fin's template based on?
Fin Template: Reactor; Built for speed, tight turns, and explosive snaps.
The Reactor template features an upright outline with a smaller centre of area, allowing the board to pivot quickly and release cleanly off the top.
This makes it ideal fin for surfers who favour fast surfing, sharp turns, and progressive manoeuvres.
What are this fin's ideal conditions?
Beach Break.
Performs particularly well in:
- Hollow waves
- Fast, punchy beach breaks
- More critical surf conditions
Board Compatibility
- Designed to fit 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 the proven Performance Core construction with full-template carbon tissue reinforcement. Built using a multi-layered RTM process with a lightweight hex core, this trusted construction delivers progressive flex, drive and reliable performance across a wide range of conditions. Extending the carbon tissue across the full template adds controlled stiffness, particularly through the tip, complementing the fin’s more upright outline with faster rebound, sharper response and more positive feedback through tight turns and rapid direction changes.
A quick note about our photos!
We use a mix of official brand images and real-life shots from our warehouse to help you make an informed decision.
That said, what you see might differ slightly from what you receive — simply because we can't photograph every possible variation.
For example, a photo might show a 6'2 board with Futures fin boxes, while you've selected a 5'10 with FCS II. Don’t worry — you’ll get exactly what you ordered.
Sometimes, small details like the logo, its placement or overall colour tones can vary slightly depending on the production batch, camera, lighting, or even your screen settings.
These are always only minor differences, and in most cases, the photos are spot on - but we totally get that buying online can feel tricky. If you ever want more details, just drop us a message — we're happy to help!