Airstyle, Big Air, Lightwind

The BOOST2’s redefined canopy delivers spot-on high performance for any riding style. This powerhouse is best for hooked-in boosting and stands for the ultimate go-big-go-anywhere feeling. The BOOST2 is a true crossover kite for magical moments on the water. High performance with maximum control.

TECHNOLOGY5 strut L.E.I Kite
SKILLSIntermediate +
SIZES5 / 7 / 9 / 11 / 13 / 15 LW / 18 LW







"Whether you send it large or keep it technical, the BOOST2 surpasses all expectations with ease."

Lewis Wilby, FLYSURFER Athlete


Force Frame

Force Frame

Through refined computer calculations and extensive real-world testing we could generate an even stiffer overall frame for the BOOST2. Ensuring control and confidence when conditions ask for it.

D2 Double RipStop

D2 Double RipStop

For the BOOST2, FLYSURFER relies on the proven D2 Techno Force Double RipStop cloth by Teijin for prolonged durability, tear-resistance, air tightness and UV protection.

Free Flow 2.0 Valve

Free Flow 2.0 Valve

The completely redesigned Free Flow 2.0 valve allows the greatest possible airflow rate with maximum user-friendliness. By simply pressing a button, the valve is opened or closed comfortably, enabling effortless inflation or deflating.

Double 3D-Shape

Double 3D-Shape

Thanks to this technology we have produced a highly efficient airfoil, which results in unrivaled hang-time and unmatched upwind performance.

Self Launcher 3.0

Self Launcher 3.0

With the Self Launcher, we are offering you a tool to easily solo-launch the BOOST2. Position the kite at the edge of the wind window, connect the sandbag (which comes with the kite), or any other bag and place this on the ground. Once the kite lines are tensioned the Self Launcher automatically releases safely at just the right moment. Recommended use: lower to medium windrange of the used kite size.

Adaptive Airfoil Bridle Kit

Adaptive Airfoil Bridle Kit

Profile adjustment – like sailing or on airplane wings – this is the idea behind the Adaptive Airfoil System. A minimalistic trailing edge bridle makes it possible to adjust the profile of the kite during flight. Especially noticeable on the excellent low end or when relaunching. The Adaptive Airfoil Bridle is integrated in the sizes 15.0LW and 18.0LW and is optionally available for sizes 11.0 & 13.0m, making them ideal for hydrofoiling.

Lightwind Edition 15.0 LW & 18.0 LW

Lightwind Edition 15.0 & 18.0

Enjoy outstanding light wind performance with the BOOST2 LW. Optimized weight reduction, higher aspect ratio and the innovative adaptive airfoil technology known from the BOOST LW. These kites will increase you’re kiting days and flying experience.

Double Cordwise Ballooning

IKA registered

FLYSURFER is passionate about kite-racing so we have registered the BOOST2. This allows you to attend every official IKA race event in the L.E.I. class. Even if a FLYSURFER kite construction is officially approved for kite racing in the IKA class – Formula Kite, this does NOT mean that the kite itself is automatically IKA registered. This must be registered by the rider him/herself, so that he/she is allowed to officially compete in the IKA class – Formula Kite and it’s specific events. Link to registration form

BOOST2 … beyond expectation!

The development team enhanced 3D profiles and re-worked the kite frame to optimize stability and top end controllability, because of this the BOOST2 also continues to shine in light winds, with the most efficient airfoil for exceptional upwind performance. The five strut flat arc design is ideal for big floaty jumps, this is exactly the feeling you would expect from a FLYSURFER L.E.I. Kite. Fine-tuned bar feedback and super precise turning gives you maximum control for the smoothest landings in gusty strong winds. Since we love hydrofoiling as well, the BOOST2 can be used with our Adaptive Airfoil Bridle Kit, which comes standard on sizes 15.0 & 18.0m and optional on sizes 11.0 & 13.0m, assuring unmatched light wind relaunch.

The BOOST2 embodies FLYSURFERS innovative high performing product spirit combined with everyday user-friendliness. If you are a passionate high jumping freerider, hydrofoiler or airstyler, then you’re gonna love the mix of performance and turning speed the BOOST2 offers!

Free Flow 2.0 Handpump

With a massive air chamber and high volume double action valve the new Free Flow 2.0 pump will get you on the water in no time without effort.Featuring an extra tall body with high air flow piston, anti sand seals and intake filter, convertible single action valve for double the PSI, a reliable pressure gauge, re-enforced hook and ergonomic hand grips, the Free Flow 2.0 pump is ready to challenge any kite on the market.

Boost2 Package
Total package consists of

1x BOOST2 Kite “kite-only”
1x Self Launcher Bag
1x Repair Kit (depower line and further spare parts)
1x BOOST2 Gear Guide
1x BOOST2 Kite Bag

BOOST25. LW18.0 LW
Area m² (projected)3.555.
Surface Ratio65...73% 65...73% 65...73% 65...73% 65...73% 65...73% 65...73%
Area growth due to powering up11%11%11%11%11%11%11%
Aspect Ratio5.
Number of segments16161616161616
Line length (m)212121212121 + 621 + 6
Wing depth in the middle (cm)122145 164 181 197 200219
Flat Wing Span (cm)5206166987728399481039
Weight Kite only (kg)2.302.763.143.604.044.104.56
Recommended barsize50505050506060
BOOST25. LW18.0 LW
Water (knots)19-4317-3915-3513-3110-289-267-23
Land (knots)15-3013-2811-269-248-227-216-19

The Wind Range Chart is to be used as a point of reference. It is based on a rider who weighs around 75kg (165lbs.) Actual use will vary depending on your weight, skill level, board size and the wind conditions on the water or land. When choosing a kite size, always use common sense and always choose a smaller size if you are not sure, especially when using the kite on land.

Boost2 9.0FRKitesurf Mag06/2017
Boost2 15.0ENMtkiter @
Boost2 13.0ENElnica @ Powerkiteforum.com12/2016
Boost2 9.0FRLozair.com09/2016
Boost2ENRamon @ The Kite Mag09/2016
Boost2 7.0 & 13.0DE8nemo0 @ Oase.com08/2016
Boost2 9.0ENIksurfmag.com08/2016
Boost2 11.0ENSpartan @ users06/2016
Boost2 11.0 & 18.0 LWENUwe @ GleitenTV05/2016
Boost2 11.0ENSpartan @
Boost2 11.0 & 18.0 LWDEUwe @ GleitenTV05/2016
Boost2ENJanne Johansson04/2016
Boost2 13.0DEJänz @ Oase.com04/2016
Boost2 11.0 & 15.0 LW DEKitejunkie.com03/2016
Boost2 11.0 & 15.0 LW - video DEKitejunkie.com03/2016
Boost2 5.0 Proto DEBalticKiteCenter.com03/2016

Free Flow 2.0 Valve, what is that?

A super solid and clean valve solution, based on a standard SUP bayonet-style valve. Basically it offers the following advantages:
  • Less flow resistance for easy pumping
  • An integrated deflation mechanism
  • A great solution for snow kiting as well
  • Secure inflation, since the pump hose snaps in snugly with the bayonet and can’t pop out
  • Double sealing: blowback valve + screw lid with seal. That means every single one already keeps the kite sealed

Is the BOOST2 inflatable with every other kite pump?

Yes, of course! We made sure that it was possible to inflate the kite with any normal kite pump because, let’s be honest, everybody prefers to leave the pump at home instead of having it take up space in their luggage. That’s why we placed a small adapter on the center strut of every BOOST2 which allows every other pump to fit into the Free Flow 2.0 Valve. As additional backup for emergency cases, the kite is also inflatable by use of the small 8mm ball valve, which we primary included to allow connection with a compressor.

That little extra 8mm ball valve: Do I need to leave it open when storing the kite?

No, you don’t. This is used on the CRONIX, BOOST1 and BOOST2, as a backup inflation option, for use when inflating by compressor, for example. People who always inflate using a hand pump (like most of us) can keep that valve closed. This is normally the case and has not had any problems. This system has been used and proven in our kites for a few years now.

A technical excurse: On the market there are numerous different kinds of valves and materials used, for example soft PVC versus TPU. It can of course be possible that problems with stretching exist with products from some other manufacturers, with the reason being that soft-PVC valves are often installed (cheaper). We only use premium and high-cost TPU, which is can be perfectly welded with the bladder (which is also made of TPU). When joining parts made of different materials, welding doesn´t work optimally and the parts therefore need to be glued. This has the common risks and dangers that the valves peel off, for example while storing the kite in a hot car.With welded valves like those on the CRONIX, BOOST1 and BOOST2 this cannot happen.

At FLYSURFER, we recommend closing the valves again after rolling up the kite so no sand can enter the bladder. Grains of sand inside of the bladder can damage the bladder and kite over time.

Is there a `standard bayonet´?

Unfortunately not. It seems pretty simple, but a quick look around will show that there is no universal bayonet design. For example, for quite some time now the same bayonet will not fit into Core valves and North valves, even though the bayonets look very similar. While Core/North/ were making the switch to the new Free Flow 2.0 hand pump, even more bayonets arrived on the market. North provides the same pump with a different bayonet as Core, for example. They are not compatible with each other, even though the bayonet looks similar. All in all, there at least 4-5 different “kite bayonets” on the market, almost none of which offers a tight fit and good seal. Most of the time these bayonets leak due to the lack of a secure sealing mechanism and they are prone to breaking due to their narrow shape. This is why we feel the SUP bayonet stands apart. It is easy to connect, and when firmly tightened it fits snugly and cleanly over the seal at the front. After testing multiple valves in the BOOST2-prototypes over the last year (including “kite bayonets”), the SUP bayonet proved itself in the field and we see it as the best solution. We have also seen that several other manufacturers have begun to experiment with it, and we are curious what will follow.
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