4.7" / 4.25" Classic Quad Fins – Natural Pro Glass | FCS II Compatible (Set of 4)

Front fins: Depth 4.7” Base 4.37” Rear fins: Depth 4.25” Base 4.2” Foil: flat inner face on all four fins.

The 4.7" / 4.25" Classic Quad Fins deliver reliable speed, drive, and control through a timeless quad-fin design, paired with the convenience of the FCS II compatible tool-free click-in system.

The larger 4.7" front fins provide strong base drive and hold, while the slightly smaller 4.25" rear fins allow for clean release and smooth transitions between turns. Constructed from natural Pro Glass fiberglass, these fins offer a balanced, predictable flex that feels connected and controlled under pressure—ideal for surfers who prefer flow over stiffness.

Designed to suit a wide range of quad-fin surfboards, this set performs exceptionally well in beach breaks and point waves where speed and hold are essential.

Key Features

• Classic quad-fin template – fast, balanced, and drive-focused

• 4.7" front fins / 4.25" rear fins – tuned for control and release

• Natural Pro Glass fiberglass – smooth, organic flex pattern

• Balanced base and rake – speed without feeling tracky

• FCS II compatible – tool-free click-in installation

• Set of four fins – complete quad configuration

Ideal For

• Quad-fin surfboards

• Surfers chasing speed, hold, and smooth release

• Beach breaks, points, and open-face waves

• Riders wanting control without sacrificing flow

Why Choose These Fins?

The classic quad setup excels at generating speed while maintaining stability through turns. Paired with Pro Glass construction, these fins provide a more forgiving, connected feel than stiffer composite materials. The FCS II compatibility ensures fast, secure installation with no screws or fin key required.

This set is ideal for surfers who want predictable performance across changing conditions.

Will This Fit My Board?

Yes. These fins are FCS II compatible and will fit any surfboard with FCS II fin boxes designed for a quad-fin setup. No tools required.

FAQs

Are the front and rear fins different sizes?
Yes. The front fins are 4.7 inches, and the rear fins are 4.25 inches, providing a balanced quad setup with controlled release.

Do these fins require screws or tools?
No. The FCS II system allows for secure, tool-free click-in installation.

How does Pro Glass compare to carbon or honeycomb fins?
Pro Glass offers a smoother, more natural flex, making it ideal for surfers who value feel, control, and consistency.

We include

Free Delivery: Everywhere in Australia.

Tracking: Quick & easy online tracking on all fins. 

Peace of Mind: All our fins are insured against loss 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.

Experience faster Express Shipping for just $10 per order at the checkout.