Firewire Endorfins Slater KS1 1-Tab 5 Fin Set Black-White M
Pickup currently unavailable at BSS
Kelly Slater's Endorfins fin set, built to float
The Firewire Endorfins Slater KS1 1-Tab 5 Fin Set pairs Kelly Slater's KS1 fin template with Endorfins construction, a carbon inlay build with a core made of 90 percent pure air. That air core means the fins genuinely float on water instead of sinking if they come loose, on top of the performance flex the carbon inlays are built to deliver.
What makes Endorfins different
- Carbon inlays add strength and flex for performance while keeping the fin light
- A core built from 90 percent pure air lets the fins float on water
- This set uses a 1-Tab base, compatible with either two tab fin boxes or single tab fin boxes
- Two tab compatible bases work like a standard Futures base, while FCSII compatible bases use two included screws and do not click in or out
Who it is for
This 5 fin set suits surfers running a five fin setup who want Kelly Slater's KS1 template in a 1-Tab base, whether that board sits in the garage between South Florida sessions or gets loaded onto a boat for a day on the water.
Installing and caring for the fins
Match the base to your board's fin boxes, either two tab or single tab compatible, before installing. If your setup uses FCSII compatible boxes, secure the fins with the two screws included in the set rather than expecting a click in fit. Because the core floats, a lost fin in the water has a real chance of resurfacing rather than sinking straight to the bottom, but stow the set in a fin bag between sessions regardless to protect the carbon inlays.
The Endorfins story
Endorfins carries forward Kelly Slater's circular fin branding, a symbol of flow that has appeared on every fin he has endorsed, while building toward the future with this new construction. The brand also backs an eco commitment through Sea Trees, offsetting its yearly carbon footprint by conserving kelp forest in California, protecting rain forest in Africa, and planting mangrove trees in Indonesia, alongside Kelly's own habit of pulling abandoned fins off the reef near his home in Hawaii.
Why shop it at Island Water Sports
Island Water Sports has been a South Florida surf shop since 1978, and we stock the fin sets serious surfers actually run, including Kelly Slater's own Endorfins line, so you can match the right base and fin count to your board in one visit.
Free Shipping, No Minimum for IWS Beach Club Members.
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Specifications
- Brand
- Endorfins
- Product
- Firewire Endorfins Slater KS1 1-Tab 5 Fin Set Black-White M
- Gender
- Unisex
- UPC
- 5607790023537
- MPN
- FINK-KS1-5F-1-M-BKWH
Frequently Asked Questions
- Do Endorfins fins float?
- Yes, Endorfins are built with a core comprised of 90 percent pure air, which allows them to float on water rather than sink.
- What fin boxes are Endorfins compatible with?
- This 1-Tab base is compatible with either two tab fin boxes or single tab fin boxes. The two tab compatible base works like a standard Futures base, while an FCSII compatible base uses two included screws and does not click in or out.
- Is this a Kelly Slater fin set?
- Yes, this is the Firewire Endorfins Slater KS1 fin set, built around Kelly Slater's KS1 template, in a 1-Tab 5 fin configuration.
- What is the Endorfins eco story?
- Endorfins supports Sea Trees to offset its yearly carbon footprint by conserving kelp forest in California, protecting rain forest in Africa, and planting mangrove trees in Indonesia, tied to Kelly Slater's practice of collecting abandoned fins off the reef in Hawaii.

