




FCS II H4 Quad Rear Fins (MED / PC Carbon / Smoke)
The H4 looks and surfs different to any other fin. Precision Swiss engineering matched with a highly evolved template provides an unprecedented level of contro…
Adds to your Lundquist cart. Mix with boards and accessories — single Stripe checkout. Ships in 3–5 business days after a Lundquist QC pass.
Specs
- Fin box
- fcs-2
- Foil
- —
- Rake
- —
- Base
- —
- Depth
- —
- Area
- —
- Weight
- 500 g
- Material
- composite
- Construction
- PC Carbon
About this fin
The H4 looks and surfs different to any other fin. Precision Swiss engineering matched with a highly evolved template provides an unprecedented level of control and predictability at high speeds. Quad Rears designed to work with both medium & large H4 sets. Performance Material Size Overview This set comes equipped with 2 x Quad Rear Fins, designed to work with both medium & large H4 sets. UNIQUE TEMPLATE While the science behind the template, materials & the foils are highly complex. Every component of this fin has been engineered to create a simple synergy between the fin & the surfboard, the rider & the wave. Rear Fin Synergy: The H4 quad combines the power + control of the H4 thruster, with the added speed & drive of a quad. Quad Rear Profile: A similar hybrid outline on the front and rear fins helps minimize turbulence + provides a smooth and predictable feel. Enhanced Foils: Revolutionary new foil designed to grip longer through turns and promotes perfect rail to rail transitions. Ideal Conditions A wide range of conditions, particularly good in critical overhead waves. Board Types Designed to fit the FCS II Fin System. Recommended for performance shortboards with moderate-to-low rocker. Fin Family Accelerator: Find Control. Speed, flow and response with added control. NEW CONSTRUCTION Precision Swiss Engineered: Creates perfect synergy between fin geometry & HI-FI materials, giving smooth & predictable feel. High Density Uni-Directional Carbon Fibre: Light & super strong with custom orientation to transfer more of your energy into speed than any other fin. Dynamic Trailing Edge: Internal composite morphs under extreme load, enabling the fins to be pushed harder without sliding out. Innovative Production: Highly specialized robotic automation combined with camera assisted quality control, ensures absolute accuracy. MEDIUM (65Kg - 80Kg / 145 - 175 Lbs) Fin Base (inches) Base (mm) Depth (inches) Depth (mm) Area (inches) Area (mm) Sweep Deg° Foil Q-Rear 4.09 103.7 4.24 107.5 12.62 8140 31.4° IFT - 80/20 View the FCS Fin Data page for Base/Depth/Area/Foil information.
New to quad setups?
Learn how foil, rake, and family choice shape the way a board rides.
More quad options

Album Mod Quad Fins (Default Title)
futures
The Album Mod Quad, designed by Album Surfboards surfer/shaper Matt Parker, is one of the most versatile split keel style quads available. Works in a variety o…

QD2 4" Thermotech (Default Title)
futures
The QD2 4” Thermotech is a medium sized quad rear with a symmetrical foil. Made in Huntington Beach, the Thermotech product line does not have the traditional…

F6 Legacy Quad (Default Title)
futures
The F6 Legacy Series Quad is a medium sized set in the Neutral template category. The honeycomb construction gives a balanced feel for all-around performance.…
Pair this fin with a Lundquist board
Every Lundquist board is built to your spec. Tell Blake what you’re after and he’ll dial in the fin recommendation with the shape.
Start a Custom Order