FCS II/Harley Ingleby/Quad Fin/Performance Core/XL/Cool Grey Color
FCS II Harley Quad Fins X-Large Cool Grey
The Quad Rears are 80/20 so that means you can use the rear quad for side fins on a 2+1 Setup.
Harley does this all the time.
World Longboard Champion Harley Ingleby’s Athlete Fin.
Harley’s XL template delivers maximum speed and drives for powerful surfers.
Ideal for performance longboards, and surf SUP.
Designed to be used with the FCS II Fin System.