X Series


Thank you for supporting Cloud 9 and staying loyal to the foil. We wanted to let you know what we have been up to, and what’s coming down the pipeline for 2019.

We’ve been hard at work. We are a small team and we almost exclusively foil these days, so we have been hyper focused on creating and riding the best gear. Our goal has always been to produce the highest quality surf foils that know how to perform in the surf, turn smoothly, remain stable, and have a comfortable lift. Our process looks a little bit like this: design → simulate → build → test → refine → repeat.

Needless to say, this makes ongoing improvement our only option. With that being said, we’d like to introduce our latest series . . . the X Series.



Wing Span

Area inches²

Area cm²


32 in

266.5 in²

1720 cm²


28 in

219 in²

1414 cm²


24 in

176.5 in²

1138 cm²


22 in


140  in²

906 cm²

X Series: Carbon

X Series: Carbon Foil Package

Includes a travel case, 30” Solid carbon mast with integral baseplate, 29” carbon fuselage, carbon construction 14” tail wing and your choice of carbon construction front wing. All required hardware setup, instruction sheet, and warranty card.

The X Series includes four newly designed wings in two different constructions, each with reduced drag profiles and increased lift. As we all know, foiling doesn’t exactly have the lowest startup cost. This is why we have been experimenting with different carbon and fiberglass layups, in an attempt to create a more economical option. After extensive testing and lots of trial and error, we have decided to produce the wings in the X Series in two constructions: all carbon & a carbon/fiberglass hybrid.

Front Wings

The X Series Surf Wings have all been designed to be exceptional carving wings in surf. Both constructions work great, and we have yet to notice a perceivable difference when riding. They both have a polyurethane core with wrapped prepreg glass and/or carbon fiber. We chose to use a prepreg material in order to decrease weight and increase strength. The X Series wings are made in a mold and heated in a pressured curing oven (autoclave), which preserves the integrity, shape and strength as resins can behave differently with respect to temperature and humidity. The Carbon construction is stronger, stiffer, lighter and more impact resistant than the hybrid series. The Hybrid construction uses less carbon, is slightly heavier, and is more cost effective to produce.

*Note the X Series wings do not fit the 2018 fuselage.

X Series: Carbon

100% Prepreg Carbon fiber construction.


Tail Wings

The X Series hydrofoils all come with the same 14” tail wing designed specifically for carving turns in the waves. The construction process is the same as the front wings, but without the foam core. These are 100% solid carbon.

14” Solid tail wing: Carbon


Performance Shims

In order to use one tail wing, we have designed these shims to balance and/or counter the forces created by the front wing travelling through the water. We recommend the shims as outlined below.

However, for the advanced rider, adding or subtracting a shim depending on surf conditions

will change the lift dynamics of the front wing.

Shims are only added to the tail wing, with pointed or thicker end of the shim towards the front wing.

X32 performs best with the Black 6mm Shim.           

X28 performs best with the White 4mm Shim.  

X24 performs best with the Red 2mm Shim.  

X22  NO Shim required.

Fuselages   We have also created two new fuselages - one for our carbon mast and one for our aluminium mast. Our main goal was to create a stronger and stiffer fuselage with less drag, no interior voids, and a wider, flatter connection to the wings. These new carbon fuselages are sleek in design and have 50% less drag than last year’s model. A stiffer connection between the board and the wings creates a much more positive feel, allowing the rider to feel the wing and to ride with more finesse and precision.

New 29” Fuselage for Carbon mast.



Both these fuselages feature 3 tail wing positions. Simply by moving the tail wing forward or backward you can change the performance characteristics of the foil. When the tail wing is set furthest back it will provide increased pitch stability and less maneuverability (this is the ideal setting for beginners).


Beginner: increased stability


Intermediate: just right


Advanced: increased maneuverability

Carbon Mast

The Carbon X Series has a 30” solid carbon tapered mast, weighing in at five pounds (same weight as our current 27” aluminium mast) and is made up of 78+ layers of high quality unidirectional prepreg carbon fiber, with 2 layers of twill carbon to keep it looking pretty on the outside. It is certainly one of, if not the stiffest mast on the market. This allows for direct input and with a very positive feel.

30” Solid core 100% prepreg carbon fiber mast

Mast to fuselage connection

with stainless steel barrel nuts.

Slotted integral carbon baseplate

for easy installation and removal.


Travel Case

All Cloud 9 surf foils are designed to disassemble for ease of travel. When purchased as a complete foil package, all foils come in the 34” x 12” x 6” Cloud 9 travel case.

Cloud 9 travel case

Recommended Wing Size

This chart is a rough estimation, based on our testing, of what size wing our beginner foilers should ride. Experienced riders may want to ride bigger or smaller wings depending on what they are trying to achieve.

***Note the X Series wings do not fit the 2018 fuselage. Existing customers will still be able to use there existing aluminium mast. When the new product arrives we will have specially discounted upgrade wing options for you, which will include a new carbon fuselage.


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