Features

  • Name The Endorfins KSR Rake Tri/Quad Fins
  • Construction Carbon Twill and Recycled P.E.T
  • Size Large (Approximate rider weight 75kg to 95kg)
  • Side Fin Height/ Base 119mm/116mm
  • Centre Fin Height/Base 115mm/ 111.5mm
  • Colour White

Description

Trust Kelly to reignite innovation flame in the fin game. The G.O.A.T is back in the game, the EndorfinsKSR Rake fin set is a rake template, and is the performance choice for perfromance boards.

Built for hold and drive its the fin Kelly used in that epic session at Kirra back in March 2024 when he surfed the Spaceship model by John Woo for Firewire. This fin set up delivers great but also releases into on rail turns really well.

With a core engineered from high density polymer overlayed with carbon veils, the KSR Fin Set has an unmatched mix of flex and strength enabling controlled spring and rebound in turns, and additional control above other fin building methods. An extremely light set of fins, this template adds minimal weight to all shapes - a performance benefit championed by Kevin Schulz and other Firewire Surfboards' team riders.

So… why has Kelly invested so much time and research into this, two main goals, firstly, a better construction for fins, to give more performance and response. Secondly, there is an ECO side to his rational. Diving into the construction first, these surfboard fins are made up of a Carbon Fibre Twill, paired with a non-woven carbon veil and a recycled P.E.T core which when all engineered together gives you a flex pattern that allows you to rip through turns , they don’t feel too stiff and the clever materials give you more hold the harder you push and more bounce back when coming out of a fast turn.

Secondly, by creating a fin that uses recycled materials and that screws in, the aim is to reduce the losing of fins. This combined with the fact these fins are so light that they float means they should last you forever and you should not have them falling out of your board.

In summary, KS has delivered one all fronts, his new fins will make a lot of incredibly happy surfers. Get yours now.This Single Tab version is compatible with all Futures fin boxes.

Delivery & returns

  • For collection (up to 17:30) from Mon 20 Jul 2026

    Collection at Boardshop

    FREE

  • For delivery between Thu 23 Jul 2026 and Mon 27 Jul 2026

    Royal Mail 3 - 5 Working Days

    £3.99

  • For delivery on Tue 21 Jul 2026

    DPD Next Working Day

    £6.99

  • Nominated Day

    £6.99

  • For delivery on Sat 25 Jul 2026

    Saturday Delivery

    £24.99

 

What if I need to send something back for exchange or refund? 

 

It's not a problem, all purchases on Boardshop.co.uk are covered by a 14 day exchange or refund guarantee. If you are not completely satisfied with your purchase it can be exchanged or the cost of the item(s) refunded. In case of all returns you will need to contact us for a returns number.

 

Please click here for further information.

 

Prices shown are for mainland UK delivery. For full worldwide delivery info please click here.

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Endorfins Slater KSR Rake Futures Tri/Quad Fins Large - White

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Overview

Key features and details

Solid, Simple, Secure

The Futures fin system uses a single-box + screw design, giving a super solid connection between fin and board. That means zero wiggle, loads of drive, and a really direct feel under your feet. It’s a favourite among powerful surfers who like to push hard through turns, and once they’re in, they’re staying put, no unwanted mid-session surprises.

Will these fit my Surfboard?

Made for Futures fin boxes, the single long slot system used on loads of modern performance surfboards. If your board has Futures boxes, you’re good to go. These won’t fit FCS I or FCS II systems, so if your board has two smaller slots instead of one long box, you’ll want to check out our FCS options instead.

Still unsure? Drop us a message with your board model and we’ll point you in the right direction.

Feedback from the riders

5 out of 5 stars
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Christian
Verified buyer
Great fins!
I used to have the old FCS Slater fins and absolutely loved them. These here definitely have a similar vibe. The plug in system looks solid, I fix my other FCS2 fins with screws anyway. So completely happy with these. Boardshop service great as always, many thanks to Ian and David!

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