Harley's XL quad fin set delivers maximum drive and control. The combined area of all four fins allows even the heaviest of surfer to push the limits without fear of sliding out. Great for heavier and powerful surfers.
Availability: Out of Stock – We understand the frustration when the product you're looking for is unavailable. At Down the Line Surf, we constantly update our inventory. New stock may be coming in soon. Give us a call on +44 (0)1736 757025 or submit your email below to be notified when new stock arrives. Thank you for choosing Down the Line Surf!

Fin Size:
X-LARGE (over 85Kg)

Fin Dimensions


  • Base: 4.90" 124mm
  • Depth: 5.22" 132mm
  • Area: 18.32"2 11822mm2
  • Sweep: 27.4°
  • Foil: Flat


  • Base: 4.28" 109mm
  • Depth: 4.41" 112mm
  • Area: 14.22"2 9172mm2
  • Sweep: 31°
  • Foil: IFT

Board Types:
All board types including mid-lengths, Longboards and SUP's.

Performance Core:
Versatile RTM construction delivers a consistent feel similar to a traditional fiberglass fin, but with the advantage of reduced weight. The stiff flex pattern extends progressively from the base through to the tip helping the surfer to maintain drive and hold through a turn. PC fins are reliable, very responsive, and can be used in a variety of different conditions.

UK Delivery for this product =
£3.95 for Royal Mail 48hr service.
£6.49 for Express Courier.

Generally all goods ordered before 1pm are sent out on the same day (Mon-Fri).

We offer a fast and efficient worldwide delivery service.

For International deliveries, the shipping will be calculated at checkout, together with any duties and tax. This ensures you have no unexpected charges when receiving your goods.. We guarantee you will have nothing extra to pay.

Check here for our full delivery information

Not happy with your product?

No problem at all!

You can return the product up to 30 days after purchase for a no quibble replacement or refund.
Simply fill out the returns form enclosed with your package and send back to us.
info@downthelinesurf.co.uk or ring one of the team on (01736) 757025

Please find our full Returns & Refund Policy here, and our Shipping Policy here. Customer Services can be contacted here.

If you have any questions about the FCS II Hi Quad Set Surfboard Fins - Extra Large, submit the product question form below and we'll get back to you as soon as possible. Or give us a call on (01736) 757025.