FCS 2 H4 Tri-Fin Set Smoke M
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FCS 2 H4 Tri-Fin Set
Surfers searching for FCS II H4 fins want one thing: a thruster set that holds a line at speed without going stiff and unpredictable, and that is exactly what this PC Carbon tri-fin set is built for. Precision Swiss engineering and a highly evolved template give the H4 a look and feel that stands apart from other FCS families, trading a soft, forgiving flex for a set that rewards a surfer who wants to push into critical, overhead conditions.
Construction and Template
- Fin System: FCS II (tool-free, glide-on base)
- Fin Set Up: Thruster
- Construction: PC Carbon
- The lower section of the fin produces maximum acceleration, while the hatchet-shaped tip adds stability and control
- A highly raked, elliptical center fin outline reduces drag and gives a predictable feel when releasing through turns
- A thicker base tapering to a thinner tip optimizes flex and regulates how energy releases during rail-to-rail transitions
Who This Fin Set Is For
The H4 belongs on a performance shortboard with a moderate to low rocker, in the hands of a surfer who already has speed and drive dialed in and is looking to add another gear. FCS rates it for a wide range of conditions but notes it performs particularly well in critical, overhead waves, so it suits the surfer chasing steeper South Florida swell windows rather than someone easing into their first thruster.
Fit, Setup, and Care
These fins glide directly into any FCS II base with no fin key or screw required, so swapping between a full tri-fin set and other FCS II templates on the same board takes seconds. Rinse the fins in fresh water after a session to clear salt and sand from the base tabs, dry them fully before storing, and inspect the tabs periodically for wear so the fins continue to seat securely in the box.
About FCS
FCS fins are designed in collaboration with the world's leading surf athletes and surfboard shapers, and the H4 uses high density uni-directional carbon fiber with a custom fiber orientation intended to transfer more surfer energy into speed. A dynamic trailing edge in the internal composite is built to morph under extreme load, letting the fin be pushed harder before it slides out, and FCS uses robotic automation with camera-assisted quality control during production for consistency across sets.
Why Buy From Island Water Sports
Island Water Sports has outfitted South Florida surfers since 1978, and our team can talk through how a fin template like the H4 pairs with your board's rocker and your local wave conditions before you buy. Order online or stop into the shop, and we will make sure the set you take home actually matches how and where you surf.
Free Shipping, No Minimum for IWS Beach Club Members.
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Specifications
- Brand
- FCS
- Product
- FCS 2 H4 Tri-Fin Set Smoke M
- Gender
- Unisex
- UPC
- 9340935001026
- MPN
- FH4M-CC01-MD-TS-R
- Feature
- Fin System: FCS II
- Feature
- Fin Set Up: Thruster
- Feature
- Construction: PC Carbon
Frequently Asked Questions
- What fin system does the FCS 2 H4 use?
- It uses the FCS II fin system, which is a tool-free, glide-on base rather than a screw-in plug.
- Is the H4 a tri-fin or quad set?
- This is a Thruster (tri-fin) set up.
- What board type is the FCS H4 designed for?
- FCS recommends it for performance shortboards with a moderate-to-low rocker.
- What conditions does the H4 fin set work best in?
- FCS notes it handles a wide range of conditions and is particularly good in critical, overhead waves.
- What are the FCS 2 H4 fins made from?
- PC Carbon construction, using high density uni-directional carbon fiber for a light, strong fin with a custom fiber orientation.




