78 · 85 · 91

Break the Speed Barrier.

An unbroken record: To this day, more than 60 years after its first flight, the X-15 hypersonic rocket-powered aircraft remains the fastest crewed aircraft ever flown. Co-designed by Jim Drake, a technical pioneer who also significantly influenced windsurfing development, and left a huge footprint in Starboard design over the years. Jim’s philosophies and knowledge made it a pleasure to work with him. Our new Foil Slalom board, the X-15, flies fast and high. Ruthlessly efficient through the air. Ridden by the fastest out there. Just like its namesake.


For 2023, 3 totally new Foil Slalom shapes with an extreme focus on aerodynamic improvement and specific optimization for high-speed use with small low-drag foil wings. The revised nose rocker is way lower to reduce aero lift and drag at high speed, whilst a significant increase in forward vee avoids catapults during touchdown. Further aerodynamic features include a soft convex deck and very smooth exit at tail to reduce high-speed drag as much as possible. The X-15 feels extremely slippery in the wind and always wants to accelerate.


The side cutaways concept has been pushed to the max to allow enough speed in displacement mode to get on foil, so you can take off even before reaching planing speeds. The board is shaped like a water drop from the nose to the tail, reducing the drag from the water while also increasing aerodynamic efficicency. As a result, the board is very slippery and stable in the air.


A flat deck shape with no concave, but even a slight convex for highest efficiency. Wind flow over the board is with minimum resistance and allows for higher speed.


With an even more recessed mast track the center of gravity is lower and drastically increases your control. This way going into gusts or windholes unexpected board movements become easy to control.


The cutaways have been extended to decrease drag before take off and also to accelerate the transition into flight mode by quickly reducing wetted surface area as speed increases.n rails in the tail section with a smooth transition to the center make for effortless turning and plenty of grip.


For Slalom speed, the back foot position is further inside compared to upwind/downwind racing foil boards. Here we are at 79.9cm wide, which allows faster downwind and reaching speeds with a more comfortable position and reduced power on the back foot.


There are less impacts to absorb when foiling. In fact, there are none. So we’ve designed the pads to be extra thin for added control and kept the diamond grooves for the perfect grip.


The Drake footstraps are made with FSC-certified, sustainably-sourced and plant-based Yulex foam. With 85% natural rubber content, CO² emitted during the manufacturing process is reduced by 80%. The remaining 15% of synthetic neoprene is kept to improve UV resistance.



The Carbon Reflex construction is our lightest, proven flagship construction and has some of the lowest warranty rates in the industry. Using the lightest biaxial carbon provides more feel, more responsiveness and more controlled flex than conventional boards. On the water, this construction will provide you with ultimate performance. It delivers the most direct feedback from the foil and allows for quicker and more precise movements. With the Carbon Reflex construction you’ll start foiling earlier. For 2023 the Carbon Reflex is limited in stock, built to order with a custom delivery lead time.


The lighest and highest value performance technology. Thanks to its full carbon bottom and a deck built from 0.6mm Australian pine wood sandwich wrapped with Military grade-glass and laminated all with Bio Resin, Starlite Carbon offers an unprecendented level of high quality in a value package with excellent finish. Starlite Carbon technology feels especially crisp with extra high impact resistance on the deck.


X-15 78
X-15 85
X-15 91
​X-15 78 takes all the development, control and efficiency gains from the new 91 and 85, and turns the heat up even further. Our super narrow, smallest foil slalom board for those who ​truly seek the outer limits and yearn to burn at the highest possible foiling speeds in the most extreme conditions. The 78 represents a low-compromise approach to breaking the Vmax barrier, prioritising velocity above versatility.
​Optimised as the ideal second size board for PWA Tour racing, the all new X-15 85 shares all the design and efficiency optimisation of the larger 91 in a shorter 210cm outline. This lower drag design was specifically developed and tested by Remi Vila and Matteo Iachino in one of the windiest locations in Italy. The further improved efficiency 85 is less disturbed by heavy gusts, providing even further control and confidence in higher wind conditions.
The Lightwind slalom choice for PWA riders and anyone who wants to go fast in light wind. Development focus on improved airflow, the new convex front optimises lift versus drag, significantly improving downwind speed. The clean, faired tail section continues the aero refinement, the recessed mast track improves drive and control resulting in a more efficient board at both low and high speeds, which is notably quicker in acceleration and much calmer at top speed. Thinning the tail allows increased rail pressure, improving handling giving a more natural and connected feel, and tactical advantage in high speed racing jibes.


← Scroll sideways for more sizes →

ModelX-15 78X-15 85X-15 91
TechnologiesCarbon Reflex SandwichCarbon Reflex Sandwich | Starlite CarbonCarbon Reflex Sandwich | Starlite Carbon
Length210 cm210 cm210 cm
Width78 cm85 cm91 cm
Tail Width75.9 cm82.3 cm88.9 cm
Thickness14.5 cm14.5 cm14.3 cm
Bottom Shape (Tail To Nose)Flat to Vee Double ConcaveFlat to Vee Double ConcaveFlat to Vee Double Concave
Footstrap Rows111
Footstraps4x Slick Straps Yulex Flouro Orange4x Slick Straps Yulex Flouro Orange4x Slick Straps Yulex Flouro Orange
FinWith out FoilWith out FoilWith out Foil
Fin BoxFoil BoxFoil BoxFoil Box
Sail Range4.0-7.05.0-8.06.0-9.0
Weight Reflex Carbon Sandwich +/-5%8,79,19,6
Weight Starlite Carbon +/-5%11,311,9-


For every board sold, Starboard plants 3 mangrove trees with Worldview International Foundation. Each Mighty Mangrove sinks down 673kg of VCS certified CO2 during its first 25 years.

Together, our 3 mangroves offset the boards Carbon Emissions 10 X over and fund local livelihoods projects in Myanmar.


Buy a board & we pick up 1.1kg of beach/ ocean plastic trash – equivalent to the amount of plastic trash entering the ocean, per person, per year.