FCS Fins B5 Bonzer Quad Fin Set

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Throw the FCS B5 Bonzer Quad Fins in your wide tailed hybrid for quick, loose turns and the most efficient use of water passing underneath you. This set of four fast runners make the most of energy from water flow and use its high surface area and stiff base to enable smooth carves and superior steering abilities. Excelling in big, clean, down-the-line waves the B5 side fins work with the concave of the board, achieve maximum speed and have incredible acceleration and hold.


Performance Glass (PG) material characteristics and flex pattern are identical to traditional fiberglass fins offering a stiff base with subtle responsive tip flex, amazing aesthetics and proven durability. PG fins are the perfect transition fin for surfers moving from fixed fins to the convenience, accuracy and performance of FCS.


A flat inside face combined with a convex outside face. The traditional flat sided foil offers an even combination of drive, pivot and hold and provides a very consistent, reliable feel over a wide variety of conditions.

Tech Specs


  • Base: 4.73 in, 120 mm
  • Depth: 2.09 in, 53 mm
  • Area: 6.87 sq in, 4435 sq mm
  • Foil: Flat


  • Base: 5.40 in, 137 mm
  • Depth: 2.76 in, 70 mm
  • Area: 10.542 sq in, 6798 sq mm
  • Foil: Flat


  • Size: Fit to Board
  • Fins in set: 4
  • Material: Performance Glass


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