TECTONICS WINDSURF FINS -

TECTONICS FALCON FREERIDE -

Fin Bases are US box, tuttle or power box 
All boxes have 6mm threads. ¼” thread available upon custom request

This is really the ticket for the really choppy windy stuff, also using the F-86 profile and has a curved leading edge with some tip sweep. 
Compared to the Goldwing which utilizes straight lines and a bit more power in the tip.
If you're looking for speed and comfort in the nasty stuff then Falcon is the one... 
You may catch a glimpse of these babies going after the World Speed Record! 
Most popular sizes 20 to 34cm