Fins Endorfins KS1 Kelly Slater Large Tri Fins

Kelly Slater's signature on every wave.

The Endorfins KS1 fins were developed in collaboration with Kelly Slater, the greatest surfer of all time, to offer the perfect balance between speed, control, and responsiveness in critical conditions. This tri-fin setup is designed for surfers seeking elite performance in barrels, vertical sections, and high-precision maneuvers.

Main features:

• Design by Kelly Slater – A model refined over decades of high-level competition.
• Balanced design – Combines straight-line drive with quick pivoting capability in radical turns.
• Lightweight and responsive construction – Reduces weight in the tail for instant acceleration and total control.
• Futures System – Compatible with the most popular fitting system on the market.
• Large size – Ideal for surfers over 75kg or for those seeking greater stability and drive.
• Black/black finish – Minimalist and timeless aesthetic.

Who is this set for?

Perfect for advanced surfers looking to maximize performance in quality waves. If you value precision in barrels, fast transitions, and absolute control in critical sections, the KS1 fins will take your surfing to the next level. Developed with direct input from Kelly Slater, these fins reflect decades of experience in world-class waves.