FCS II H4 Tri Fin Set-Smoke-Medium
Available on orders of $100 or more. Excludes boards and oversized items.
Shipping details Extended holiday returns Return through Jan. 24, 2027Eligible purchases Nov. 6–Dec. 24, 2026. Exclusions apply.
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Located in Cape Hatteras. No bots.Radically different side and center fin templates create a powerful fin set with ultimate speed and drive.
Side fin profile: the lower section produces maximum acceleration, while the hatchet-like tip creates stability and control.
Center fin profile: a highly raked elliptical outline reduces drag and offers a feeling of predictability when releasing through turns.
Foils: a thicker base with a tapered tip optimizes flex and regulates the release of energy during rail to rail transitions.
A wide range of conditions, particularly good in critical overhead waves.
Designed to fit the FCS II Fin System.
Recommended for performance shortboards with moderate-to-low rocker.
Accelerator: Find Control. Speed, flow and response with added control.
| Fin | Base (inches) | Base (mm) | Depth (inches) | Depth (mm) | Area (inches) | Area (mm) | Sweep (deg) | Foil |
|---|---|---|---|---|---|---|---|---|
| MED Side | 4.48 | 113.6 | 4.45 | 113.0 | 15.07 | 9721 | 38.3 | Flat |
| MED Ctr | 4.40 | 111.7 | 4.61 | 117.0 | 14.58 | 9405 | 37.2 | 50/50 |
FCS designs high-performance surf hardware and accessories—from fins to traction—focused on enhancing control, speed, and connection between surfer and board across all conditions.
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