The Flysurfer SONIC4 is built for kiters who want just one thing: uncompromising performance. This is a high-performance foil kite with a high aspect ratio, incredible upwind angles, and brutal hangtime.
The SONIC4 is the result of Flysurfer’s top-level development in racing, big air, and long flight sessions. If you know how to handle a kite, the SONIC4 will unlock a whole new dimension of riding.
Why choose the SONIC?
✅ Massive lift and long hangtime ✅ Exceptionally wide wind range for various conditions ✅ Lightweight TX-Light and durable DLX+ construction ✅ Quick inflation for instant control after launch ✅ Performance Tuner to adjust power and bar feel ✅ Built-in PMAs for profile tuning ✅ Bridle Check Tool for easy maintenance and tuning ✅ Included: kite, universal bag, light bag, trim checker, sandbag, repair kit
Who is it for?
The SONIC is made for those who ride hard and demand more from every session. Perfect for big air lovers, freeriders and hydrofoil pilots looking for balance, power and reliability – even when the weather turns wild.
The SONIC launches high and floats even higher. Whether in light wind or gusts, you stay in control and push limits with confidence.
Streamlined, smart construction
DLX+ protects where it matters, TX-Light keeps things agile. The internal design speeds up inflation and gets you back in the air fast – even after a crash.
Tuning tools included
With both the Performance Tuner and Profile Momentum Adjuster, you can shape the kite’s behavior to match your riding style. Responsive, relaxed or race-tuned – it’s all up to you.
Choosing a selection results in a full page refresh.
