Futures Fins QD2 4.0 Blackstix Quad Rears Fin Set

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Switch it up by adding the Futures QD2 Blackstix Quad Rear Fins to morph your tri into a quad. The QD2 4.0 Blackstix is a medium size quad rear set that favors boards with the rear boxes set closer to the rail, away from the stringer. With an 80/20 foil and an exquisite balance of hold and drive, the QD2 4.0 Blackstix rears provide an uncanny mix of response and control. Ride Number of 8.2.


Blackstix have a flexible Carbon Fiber tip that loads up and releases energy for generating speed when you need it. These are the lightest fins in the Futures line.

Tech Specs

  • Height: 4.05 in
  • Base: 3.87 in
  • Area: 11.67 sq in
  • Foil: 80/20


  • Size: Medium
  • Fins in set: 2
  • Material: Blackstix
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