5.2 and 4.35 inch Big Boy quad fins in black Pro Glass Futures compatible
Big Boy quad fin set showing oversized front and rear fins
5.2 and 4.35 inch Big Boy quad fins in black Pro Glass Futures compatible
Big Boy quad fin set showing oversized front and rear fins

5.2" / 4.35" Big Boy Quad Fins – Black Pro Glass (Futures Compatible, Set of 4).

$119.00

Maximum power and confidence — Big Boy Quads deliver drive, hold, and control for bigger boards and stronger surfers.

Maximum power and confidence — Big Boy Quads deliver drive, hold, and control for bigger boards and stronger surfers.

Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws. Futures compatible grub screws.
Futures compatible grub screws.
from $2.90
Number of grub screws.:
Small Wax Comb with Integrated Fin Key.
Small Wax Comb with Integrated Fin Key.
$6.90

Front fins Depth 5.2” Base 5” tab 3/4” Rear fins Depth 4.35” Base 4.35” tab 1/2” Foil flat inner face on all fins.

The 5.2" / 4.35" Big Boy Quad Fins are built for surfers who need extra fin area, stability, and drive without sacrificing speed. Oversized front fins generate strong projection and acceleration, while the slightly smaller rear fins provide controlled release and confidence through turns.

Made from durable black Pro Glass, these fins feature a medium-stiff flex that holds firm under load, making them ideal for powerful surfing and higher-speed conditions. The quad configuration promotes fast down-the-line speed with excellent rail engagement, particularly on wider-tailed boards and step-ups.

Designed to be Futures compatible, this set offers a solid, secure fit that enhances response and reliability in demanding conditions.

Key Features

  • Fin Type: Quad fin set

  • Front Fins: 5.2"

  • Rear Fins: 4.35"

  • Template: Big Boy (high-area, drive-focused design)

  • Construction: Black Pro Glass (fiberglass)

  • Flex Pattern: Medium-stiff for power and stability

  • Compatibility: Futures compatible

  • Set Includes: 4 fins (2 front + 2 rear)

Ideal For

  • Bigger or more powerful surfers

  • Wider-tailed shortboards and hybrids

  • Step-ups and boards requiring extra hold

  • Medium to overhead surf conditions

Why Choose the Big Boy Quad Fins?

  • Increased fin area for maximum drive and hold

  • Stable, confidence-inspiring feel at speed

  • Durable Pro Glass construction for long-term use

  • Futures system provides a solid, locked-in fit

FAQs

Who are these fins best suited for?
They’re ideal for larger surfers or anyone wanting extra drive and control from a quad setup.

Will these fins feel too stiff?
Despite their size, the Pro Glass construction offers controlled flex, keeping the board responsive rather than rigid.

Will these fit my board?
Yes. These fins are compatible with standard Futures fin boxes.

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.