UHM 11mm MAST!

The F4 AX Downwind Masts bring world-cup carbon engineering into your downwind and surf sessions. Built from 100 % UHM (Ultra High Modulus) carbon with proprietary prepreg layups, its stiffness-to-weight ratio is dialed for maximum responsiveness and efficiency. 

Why these masts matter:

Optimized length & stiffness - At 75, 85 and 95 cm, these are the thinnest and narrowest masts in the F4 GP lineup, which means less drag and more precision in turn initiation. 

Drag-minimized connections - A refined tab-and-flange system with just three M6 fasteners ensures a solid, corrosion-resistant connection to your fuselage — all while keeping aerodynamic and hydrodynamic drag in check.

Please note this AX name has replaced the TE Downwind.