FCS II Harley Mid PC Large White Quad Rear Retail Fins

HI Mid Quad Rear Set — Performance Core / Large

The back end of a quad conversion for your mid-length. Harley designed these as the trailer pair to his Mid Set thruster — drop them in alongside the front Mid Set and you've got a full four-fin setup ready to go. Same board, completely different feel: more drive through flat sections, more hold off the bottom, smoother arcs through long turns.

These aren't standalone — they're meant to work with a matched front set. If you're not running the HI Mid Set up front already, grab both and you've got the most versatile mid-length fin setup in the shop. Thruster one session, quad the next.

Performance Core construction keeps the trailers light and responsive — stiff enough to drive but with the tip flex to stay lively on a longer rail. Tuned for the kind of progressive, modern mid-length surfing Harley built his name on.

• Quad rear trailers — built to pair with the HI Mid Set (front fins, sold separately)
• Performance Core construction
• Large
• FCS II compatible
• Designed for mid-lengths, hybrids, and longer performance shapes

Best on: mid-lengths and hybrids with moderate-to-extreme rocker and deep concaves.

Pair with: [Harley Ingleby Mid Set — Performance Core, Large, Reactor]