FCS 2 AM PC Air Core Tri-Quad Fin Set Grey L
Pickup available at BSS
Usually ready in 24 hours
Al Merrick Template. AirCore Construction. Built for Progressive Surfing.
The FCS 2 AM PC Air Core Tri-Quad Fin Set is built around Al Merrick's proven thruster template, engineered for radical, committed surfing. Raked side fins generate exceptional speed and drive down the line, while the responsive foil allows quick, precise release through turns. Whether you run it as a thruster or quad, the set delivers a predictable platform that holds up across a wide range of wave conditions.
AirCore Technology
AirCore technology is the structural core of this fin. A pressed polyurethane foam core is shaped to mimic the exact geometric foil of the fin panel, which reduces the amount of fiberglass required in the RTM (Resin Transfer Moulding) process. The result is a fin that is meaningfully lighter than a solid glass counterpart, while giving FCS total control over flex pattern and stiffness. You get a fin that responds the way it is designed to respond, not just however the lamination landed.
The three visible hexagonal windows in the fin face are a direct expression of this core geometry. They are not cosmetic; they mark where the AirCore foam sits and where material has been removed without sacrificing structural integrity.
Performance Core (PC) Flex
Performance Core fins are designed for everyday surfers who want real responsiveness without the unforgiving stiffness of a full-carbon setup. The flex pattern is progressive, meaning the fin loads gradually from base to tip through a turn, then releases with drive rather than dead rebound. This makes the AM PC Air Core set versatile across conditions: punchy beach breaks, open-faced point waves, or anywhere you need both speed and the ability to snap off the top.
Al Merrick Thruster Template
Al Merrick is the shaper behind Channel Islands Surfboards and one of the most influential design voices in modern surfing. His thruster template for FCS II is built for progressive, powerful surfing. The raked outline pushes speed and projection through turns rather than pivot-heavy release, making it a strong choice for surfers who drive hard off the bottom and commit through the top of the wave.
FCS II Fin System Compatibility
These fins are designed to fit the FCS II Fin System. The tool-free, tab-and-click installation means no screws, no keys, and no fumbling on the beach. The set is configured as a Tri-Quad, so the same fins serve both a three-fin thruster and a four-fin quad setup depending on your board's box configuration and the conditions you are surfing.
Who These Fins Are For
The AM PC Air Core Tri-Quad set is best suited to surfers in the intermediate to advanced range who surf with commitment and want a fin that rewards it. The raked template and progressive PC flex work together to produce speed-first surfing with clean release at the critical moment. If you are on an FCS II board and want a lightweight, high-performance set that covers both thruster and quad setups, this is a natural fit.
Free Shipping, No Minimum for IWS Beach Club Members.
Returns are eligible within 30 days of receiving your order. Return shipping labels are FREE for IWS Beach Club Members. See more
Specifications
- Brand
- FCS
- Model
- AM PC Air Core
- Fin System
- FCS II (tool-free)
- Configuration
- Tri-Quad (thruster or quad compatible)
- Construction
- RTM fibreglass with AirCore pressed polyurethane foam core
- Flex Profile
- Performance Core (PC) progressive flex
- Template Designer
- Al Merrick
- Foil
- Geometric foil mimicked by AirCore internal structure
- MPN
- FAML-PC03-LG-FS-R
- UPC
- 9340935044207
Frequently Asked Questions
- What is AirCore technology in FCS fins?
- AirCore technology uses a pressed polyurethane foam core shaped to match the exact geometric foil of the fin. This reduces the amount of fiberglass needed in the RTM moulding process, making the fin lighter while giving FCS full control over the flex pattern from base to tip.
- What is the difference between FCS II AM PC and a standard fibreglass fin?
- The PC (Performance Core) construction adds a foam core inside the RTM fibreglass shell, producing a progressive flex that loads and releases through turns in a controlled way. A solid fibreglass fin is stiffer and less forgiving. The AirCore version also removes material weight without compromising the foil geometry.
- Can I use this set as both a thruster and a quad?
- Yes. The Tri-Quad configuration includes fins sized for both setups. Run three fins for a thruster drive-and-hold feel, or four fins for a quad's added speed and wider arc through turns. The FCS II tab system lets you switch configurations without tools.
- Will these fins fit my board?
- These fins are designed specifically for the FCS II Fin System. If your board has FCS II fin boxes (the tool-free, tab-style system), they will fit. They are not compatible with the original FCS I boxes or other fin systems without an adapter.
- What kind of surfer is the Al Merrick template designed for?
- The Al Merrick template is built for progressive, powerful surfing. The raked side fins prioritize speed and drive, making it well suited to intermediate and advanced surfers who surf with commitment and generate speed through bottom turns rather than relying on pivot-heavy release.
- What does the FCS II AM PC Air Core set include?
- The set includes the fin panels needed for a Tri-Quad setup on an FCS II board. No tools or fin keys are required for installation thanks to the FCS II click-in system.
- Where can I buy the FCS II AM PC Air Core Tri-Quad fins?
- The FCS 2 AM PC Air Core Tri-Quad Fin Set is available at Island Water Sports in store and online.