FCS II Modern Keel PC Twin Retail Fins - Extra Large

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The FCS Modern Fish twin fin set is an upright keel template designed for traditional fish shapes. The fins have a lower sweep (rake) than most conventional, wider based keels which allows it to pivot in a really tight radius. The high area and depth not only delivers a feeling of control when pushed harder on the open face, but helps to maintain tremendous speed through roundhouse cutbacks. This is the only fin specifically designed for the Firewire GoFish (Firewire have specifically set the plugs for this fin).

Performance Core Construction fins are designed to deliver the feeling of a traditional fibreglass fin with the added performance reduced weight delivers. The RTM (Resin Transfer Moulding) process results in a nice lightweight fin with an excellent flex pattern.


- Base: 4.60" / 117mm
- Depth: 5.50" / 139mm
- Area: 25.05"² / 16160mm²
- Sweep: 39º

Delivery & Returns

See our delivery information for more details.


Ukraine still needs your help, we have teamed up with Cornwall and Devon sending love to Ukraine to do our part. We want to use our reach to help raise enough money to send a van full of supplies, driven by two of our GOH team members, to those who need it most. With this in mind, we are giving £2 for every order over £100. If you want to do your part, please donate via the attached GoFundMe, thank you!


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