FORTRESS Mast

The FORTRESS is much more than a mast: it is a statement of strength. Designed to meet the demands of the most imposing sizes and the extreme stresses of very large wings (like the155LR), it redefines the standards of bending and twisting. In our test bench, it outperforms without hesitation the highest-end models from global leaders.

The concept : A structure in Carbon UHM (Ultra High Modulus) associated with a robust geometry with variable profile, offering colossal structural rigidity.
Feeling : Unwavering stability. Even under the pressure of a powerful rider or a giant wing, the mast does not flinch. The transmission is direct, the pop is massive, and the twisting is completely locked.
Usage : Essentially for Pumping (Engaged Dockstart), but also for WingFoil.

The opinion of the Ketos Team :

"It is the mast of all superlatives. It is called the Fortress because it creates a feeling of total security: nothing moves, even when you push hard with a 1.5m wingspan. For larger sizes or those seeking surgical precision without any deformation, it is the ultimate weapon."

1,708.33 €

MAT / Lobgueur
Mast / Board Connection
Mast / Fuselage Connection
T-NUTS

Add to cart

Buy now

Add to wishlist

General conditions
Delivery within 4 weeks

The robustness of a good design

The Fortress was designed to put geometry at the service of piloting. The work on the chord, the profile, and the manufacturing has allowed for the construction of a mast with unmatched mechanical properties. Combined with a precise construction and manufacturing process, this rigidity does not come at the expense of glide. Minimum thickness: 13.5

Ketos Engineering: Zero Compromise

UHM Technology : The use of Ultra High Modulus carbon fibers allows for an exceptional weight/stiffness ratio.
Controlled Dynamism : Despite its extreme stiffness, the Fortress retains a dynamic "bounce" that facilitates pumping and takeoff in wing.
Modularity : Available in 75, 80, and 85 cm to adapt to all depths and styles of navigation.

Key Specifications:

Thickness : 13.5 mm (lower part).
Construction : UHM Carbon (Ultra High Modulus).
System : Compatible MPB Fuselage, US Rails (75, 80, 85 cm) or KF BOX (85 cm only).
Spirit : Extreme Rigidity, Lightweight, Stability, High Performance.

	Plate		TOP -10cm		Center		Bottom +5cm
Mat	Thickness	Rope	Thickness	Rope	Thickness	Rope	Thickness	Rope	Weight*
Vario Lite 80cm	24	163	14.87	120	15	125	14	107	1520
Kronos 95cm	24	163	15	153	15	117.5	12.9	106	1680
Fortress 80cm	24	163	20.6	163	16.8	153	13.65	115	1740
Ultra 2 80cm	24	163	16.3	147.8	15.5	142.8	13.25	110	1850
Mat Evo 2 80cm	24	163	20.6	163	16.8	153	13.65	115	1980
									*Average weight, the weight may vary from one mast to another