KING BISON Surfboard Fins FCS 2 FCSII Compatible Model 2-Piece Set TWIN KEEL 4.65” Black UV Cut These are TWIN KEEL fins compatible with FCS2.

The flexibility created by the template that gradually rakes towards the tip area, combined with the flat foil on the inside, improves responsiveness and promotes high performance.
The base is reinforced to a certain extent, while the tip is softer and designed to flex slowly.
Finished with linear and stable flex characteristics by hybridizing materials, they are very controllable and easy to use for advanced to beginner surfers, making it easy to generate drive even in weak waves.
A one-rank higher quality Funktion Glass Flex Fin System that utilizes the characteristics of nylon and fiberglass.
The material is carbon composite with a no-brand matte sheen.
This is a new and unused item, but adjustments with a file may be necessary if it cannot be properly set in the fin box during installation.
*Due to the inclusion of carbon composite, there are areas where the surface of the fin has a mottled pattern, but this is a characteristic of the material and not a product defect.

4.65 Fin
Height: 118mm
Base Width: 113mm
Color: Black
Material: NYLON material + FIBER GLASS material
Weight: 235gm
Quantity: 4.65” Fin x 2 Total 2 pieces x FCSII FCS2 Fin Box Compatible "Precautions for Use"
This product uses glass fiber material.

Due to the characteristics of the material, fine glass fiber tips may be exposed on the surface.

To prevent injury or discomfort, please be careful not to touch directly with bare hands, regardless of whether the exposure is visible.

In the unlikely event that glass fibers penetrate the skin and pain or discomfort persists, please seek prompt medical attention and treatment.

v These are TWIN KEEL fins compatible with FCS2.
Quantity: 2 pieces
v The material is carbon composite with a no-brand matte sheen.
It is a lightweight and high-strength mixed material of nylon and fiberglass reinforced polymer.
Finished with linear and stable flex characteristics by hybridizing materials, they are very controllable and easy to use for advanced to beginner surfers, making it easy to generate drive even in weak waves.
A one-rank higher quality Funktion Glass Flex Fin System that utilizes the characteristics of nylon and fiberglass.
v This is a new and unused item, but adjustments with a file may be necessary if it cannot be properly set in the fin box during installation.

v The shape is an homage to the Al Merrick Keel Twin.
Popular for generating more drive and offering greater line freedom than PC core fins in waves below head-high, and is also predictable and easy to ride.
v Recommended for improving board maneuverability as it is lightweight and compact.

2026/03/23 20:29:44#b9e615c2a0ad2875e9c42d036b4e6de8f8e55e1d