FCS II Mayhem Driver Quad Rear Fin Set

New name. New Look. Mayhem's new performance template. Product Overview Material Size Designed in collaboration with shaper and pro surfer Matt Biolos, the Mayhem Driver Quad-Rears are a refined high-performance template built to perform across a wide range of boards—from elite performance models to everyday versatile boards like the RNF and Puddle Jumper. Part of the Carver fin family, this elongated template features a wide base, curved trailing edge, and tapered tip, providing exceptional hold and control for powerful, drawn-out turns. Designed for surfers who like to carve and hack with precision, the Mayhem Driver excels in point breaks and hollow waves, helping you maintain drive through aggressive bottom turns while offering smooth, flowing transitions between maneuvers. Featuring a new aesthetic and signature design, this fin combines power, stability, and responsiveness in one versatile high-performance template. Features & Benefits Designed in collaboration with Matt Biolos Wide base and tapered tip for drive and control Elongated template for powerful, drawn-out turns Smooth transitions between turns for flowing performance Ideal for high-performance surfing and everyday versatility Performance Feel The Mayhem Driver provides powerful hold and smooth responsiveness. The wide base generates strong drive off the bottom, while the tapered tip and curved trailing edge allow the fin to release cleanly through turns. Its elongated Carver-style template ensures stability and control in hollow waves and point-break conditions, making it ideal for surfers who want flowing carves and aggressive power turns. The result is a fin that feels stable, fast, and precise, suitable for both performance-focused sessions and versatile everyday surfing. Fin Template: Carver Built for power, drive, and drawn-out turns. The Carver template features an elongated outline with a high degree of sweep, allowing the board to hold its line through powerful bottom turns and extended carves. This design generates exceptional hold and control, making it ideal for surfers who like to lean hard into turns and draw long, committed lines across the wave face. Ideal Conditions: Point Break Performs particularly well in: Open-face waves Down-the-line point breaks Long, carving turns on clean walls Board Compatibility Designed to fit the FCS II Fin System. Recommended for boards with deep concaves and moderate-to-extreme rocker 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. SMALL (5 MEDIUM (65kg - 80kg / 145 - 175 Lbs) LARGE ( 75kg - 90kg / 165 - 200 Lbs) Fin Base (inches) Base (mm) Depth (inches) Depth (mm) Area (inches) Area (mm) Sweep Deg° Foil MED Side 4.02 102.0 4.16 105.6 11.53 7439 33.3° 80/20 LRG Side 4.02 102.0 4.16 105.6 11.53 7439 33.3° 80/20 View the FCS Fin Data page for Base/Depth/Area/Foil information.