Foil and Wing Accessories

DropBox Fin Adaptor


North DROPBOX FIN ADAPTORFor use with Seek Air





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Converts your Seek Air 5’9 or 6’2 into a stable learn-to-wing board. ​Simply drop the Fin Adaptor into the mast track. Secure using the screws and washers supplied with your Seek Air Board. The fin slides into the fin slot on the adaptor. ... We recommend using the DropBox Fin Adaptor set-up along with the two removable side fins for maximum performance and stability from your Seek Air when learning how to wing. You can use your board with the DropBox Fin Adaptor only (without the side fins) for stand-up paddling.

product code: 85009.230136

Dropbox Fin Adaptor, Seek Air Fin, Dropbox Screw Pack – 23mm


  • Always use in conjunction with two side fins​​
  • Inserts into CST Base DropBox mst track​
  • Provides lateral resistance for forward drive to stay upwind​
  • Saves your mast from damage in shallow water​
  • Compatible with any 165x90mm foil mast track