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AHD Thunderbolt 165L Windfoil Board & Starboard GT-R + Hydrofoil Package

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Dedicated to windfoiling, AHD is proud to welcome the Thunderbolts into its family!

Eager to give the best answer to a practice evolving constantly, we took the time necessary to develop a shape whose parameters are fully answering essential requirements of demanding riders.


  • One Shot Sandwich
  • Double carbon sandwich


Model Thunderbolt 75 Thunderbolt 85 Thunderbolt 91
Volume 130 L 145 L 165 L
Length 235 cm 226 cm 224 cm
Width 75 cm 85 cm 91 cm
Weight 8,5 kgs 8,7 kgs 8,9 kgs
Fin Deep Tuttle (not provided) Deep Tuttle (not provided) Deep Tuttle (not provided)
Footstrap MFC (or equivalent) MFC (or equivalent) MFC (or equivalent)




The freerace foil. Designed for speed on a reach, broad downwind and with power reserves to drive back upwind. Ideal for fast, sporty recreational foiling, fast foil jibes and setting your personal best top speeds

The new GT-R Plus swaps the 95 Standard fuselage for the new 95 Plus fuselage.

This new fuselage shifts the front wing forwards and reduces tail wing angle to make it more aligned with the front wing, creating what we call a High Efficiency Foil Geometry (NZ Pat. App. No. 751177). With both wings flying through the water at more parallel angles, you release more speed, you get quicker acceleration and more control.

“It’s like someone released the handbrake” Gonzalo Costa Hoevel, PWA Foil Champion. 

Choose this foil if you want a racing allrounder. It’s fast, it goes upwind and flies on the reach without being too powerful.

The GTR Plus Aluminium is supplied with the Aluminium V5 85cm mast. It is built from an extrusion of 6061 aluminium, a grade of aluminium that we selected for its strength, weight and superior corrosion resistance. The V5 is extra-strong and extra stiff, making it suitable for windsurf foiling. Three oversized I beam stringers and five 12mm stainless steel bolts carry the vertical loads.  It is even stronger and stiffer than the Aluminium V7 masts used for wing and wave foils.

Front Wing: 800
Tail Wing: 330
Fuselage: 95 Plus
Mast: Aluminium V5 85cm Deep Tuttle
Other items: 1x Torx Key and a set of bolts to assemble the foil. The GTR Plus Carbon is supplied with a Team Bag. The Aluminium version is supplied without.