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The FCS II Matt Biolos PG Split Keel Quad Fin Set features Matt "Mayhem" Biolos’s specialty quad design, built with a high-area upright keel template for added bite and control. Ideal for modern fish and hybrid boards with wide tails, the set balances stability with pivoting capabilities. Crafted from Performance Glass (PG), these stiff fiberglass fins maintain flex integrity under extreme force, making them a trusted choice for advanced performance in demanding conditions. Designed to fit the FCS II Fin System.
| Fins | Height | Base | Area | Sweep | Foil |
| Side Fins | 4.79" [121mm] | 4.63" [117mm] | 19.27"² [12432mm²] | 44.8° | Flat |
| Rear Fins | 4.40" [112mm] | 4.03" [102mm] | 12.63"² [8150mm²] | 28.5° | 80/20 |
Ships within 48 hours · Estimated delivery Jun 30 - Jul 5
US$40
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