FCS II MB PG Split Keel Surf Fins ak A356 T6 Aluminum hanger and

A356 T6 Aluminum hanger and baseplate

True T6 heat-treated baseplates and hangers

Fiberglass: Biaxial

Marked by a straightforward low-top

FCS II MB PG Split Keel Surf Fins ak A356 T6 Aluminum hanger andTech Overview Matt 'Mayhem' Biolos's specialty quad fin set. High area quad keel set adds bite and control to hybrid boards with wide tails, without sacrificing pivoting capabilities. Board Types Designed to fit the FCS II Fin System. Recommended for all board types including modern fish and hybrid models with moderate to low rocker. Performance Glass Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff,