FCS II Matt Biolos Split Keel Quad Fins accessories sized slightly longer and narrower

sized slightly longer and narrower than your traditional fish

an “S” deck to keep the nose and tail foils on the thinner side

2 + 1 Compatible

and freedom made possible by modern features synonymous with Merrick design principles

the Zen 4 also excels in below average surf

FCS II Matt Biolos Split Keel Quad Fins accessories sized slightly longer and narrowerOverview 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.