FCS II Matt Biolos Split Keel Quad Fins accessories Interchangeable smooth rotating nylon cuff

Interchangeable smooth rotating nylon cuff and rail saver swivel assembly

In addition to its natural wellness properties

sized slightly longer and narrower than your traditional fish

the Zen 4 also excels in below average surf

BLOCK SURF WOOD SURFBOARD WALL RACKS

FCS II Matt Biolos Split Keel Quad Fins accessories Interchangeable smooth rotating nylon cuffOverview 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.