6" Retro Performance Twin Fins – Black Pro Glass | FCS Compatible Twin Fin Set

FCS compatible. Depth 6” Base 5.2” Foil: flat inner face.

The 6" Retro performance Twin Fins are a faithful performance twin-fin template inspired by late-70s Australian design—fast down the line, powerful through turns, and free off the tail. Featuring a tall, raked outline and a solid base, this set delivers exceptional drive while maintaining that unmistakable twin-fin looseness.

Constructed from black Pro Glass fiberglass, these fins offer a smooth, predictable flex pattern that loads through turns and releases cleanly at speed. Designed to pair perfectly with modern or retro twin-fin surfboards, they shine in clean beach breaks, point waves, and playful conditions where speed and flow matter most.

Fully FCS compatible, this is a set of two fins built for surfers who want classic twin energy with reliable control.

Key Features

• Retro performance twin-fin template – fast, flowing, and drive-oriented

• 6" height – added hold and stability compared to smaller twins

• Black Pro Glass fiberglass – durable with a smooth, responsive flex

• Wide base + upright profile – excellent projection and down-the-line speed

• FCS compatible – fits all standard FCS fin boxes

• Set of two fins – twin-fin configuration only

Ideal For

• Retro and modern twin-fin surfboards

• Surfers chasing speed, flow, and classic twin feel

• Clean beach breaks, points, and open faces

Why Choose These Fins?

Unlike overly stiff composite fins, Pro Glass offers a more organic flex that complements the twin-fin design—powerful when pushed, smooth when cruising. The MR-style template remains one of the most trusted twin outlines ever, balancing drive and freedom without feeling skatey or unpredictable.

If you want that unmistakable twin-fin glide with confidence at speed, this set delivers.

Will This Fit My Board?

Yes. These fins are FCS compatible and will fit any surfboard with standard FCS fin boxes designed for a twin-fin setup.

FAQs

Are these fins sold as a pair or individually?
These fins are sold as a set of two, designed specifically for twin-fin surfboards.

How does Pro Glass compare to carbon or honeycomb fins?
Pro Glass provides a smoother, more natural flex, ideal for twins where feel, flow, and controlled release matter more than stiffness.

Are these suitable for heavier surfers?
Yes. The 6" height and solid base offer excellent drive and hold, making them suitable for a wide range of surfer weights.

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.

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