4.75" Medium Rake Performance Carbon Fiber TekFlex Fins – FCS II Compatible 5-Fin Set (Thruster + Quad)

Front fins Depth  4.75 “ Base  4.6” Foil flat inner face

Center trailer Depth 4.5” Base 4.5” Foil 50/50

Quad trailers Depth 4” Base 3.9” Foil flat inner face

The 4.75" Medium Rake Performance Carbon Fiber TekFlex Fin Set is engineered for surfers who want explosive drive, fast rail-to-rail response, and adaptable setup options. Featuring the proven Medium Rake Performance template, these fins are ideal for medium to larger surfers and performance-oriented surfboards.

Constructed using TekFlex carbon fiber, the fins combine a stiff base for immediate acceleration with refined tip flex for smooth release through turns. The result is a fin that feels fast, controlled, and predictable, even in powerful or critical conditions.

This is a set of five fins, allowing you to switch between thruster (3-fin) and quad (4-fin) setups depending on wave size, board design, and personal preference. Fully FCS II compatible, the fins install without screws and lock securely into modern FCS II fin boxes.

Designed for beach breaks, reefs, and point waves, this template excels in punchy beachies and solid open-face surf, delivering confidence at speed.

Key Features & Benefits

• Medium Rake Performance Template – Balanced rake and area for speed, drive, and control

• Carbon Fiber TekFlex Construction – Responsive flex with powerful rebound

• 5-Fin Versatility – Run thruster or quad from one set

• FCS II Compatible – Tool-less installation, secure fit

• 4.75" Size – Ideal for medium to larger surfers

• High-Speed Stability – Excellent hold in critical sections

• Lightweight & Durable – Built for performance surfing

Fin Specifications

• Fin Height: 4.75"

• Construction: Carbon Fiber TekFlex

• Template: Medium Rake Performance

• Fin System: FCS II compatible

• Configuration: 5-fin set (thruster + quad options)

• Recommended Surfer Weight: Medium to Large

• Board Types: Shortboards, performance hybrids, step-ups

Who These Fins Are Best For

• Surfers seeking maximum speed and drive

• Riders who like switching between thruster and quad

• Performance surfers in powerful or hollow waves

• Boards that benefit from controlled flex and stability

Suggested Use Conditions

• Chest-high to overhead surf

• Beach breaks, reefs, and points

• Clean, punchy, or fast open-face waves

FAQ’s

Are these fins compatible with FCS II fin boxes?
Yes. These fins are fully FCS II compatible and install without screws.

What is TekFlex carbon fiber?
TekFlex is a carbon fiber construction designed to provide a stiff base with responsive tip flex, improving acceleration and control.

Can I use these fins as a quad or thruster?
Yes. This is a 5-fin set, allowing both thruster (3-fin) and quad (4-fin) configurations.

We include

Free Delivery with Insurance: Everywhere in Australia on all fins.

Tracking: Quick & easy online tracking on all fins ,wetsuits and leashes. 

Peace of Mind: All our fins, wetsuits and leashes are insured if lost in transit.

Prompt Australian Dispatch: All items are sent from stock held in Sydney on the same or next business day.

Returns: 30-day, no questions asked returns, for unused full price items.

No More to Pay: No surcharges added at the checkout.

Express Shipping for just $10 per order at checkout.

TekFlex fins have a carbon fiber over hex core construction making them lighter, with the strength and responsiveness of solid Pro Glass fiberglass.

They are perfect for powerful surfers or powerful waves.

TekFlex produces a robust, firm flex pattern without added weight. They are part of the next generation of fin manufacturing technology, engineered to be stiff and light.

These fins will give you a solid and engaged feel for those big drops, but be lightweight and responsive.

Choose to use as a thruster or quad set.