Flysurfer Sonic 4 Kite

Performance and hangtime in a closed cell kite

For kitesurfers ready to take the next step in their closed cell kite journey, the Flysurfer Sonic 4 Kite is a serious recommendation. This high-performance closed cell kite is designed for Big Air, Hydrofoil, and Freeride, and merges efficiency, stability, and power into one streamlined design. Flysurfer has completely redesigned the Sonic 4 from the ground up, resulting in a lighter, more agile, and surprisingly accessible model with perfect balance. If you're new to closed cell kites, it's better to first check out the Flysurfer Soul (see related products below), a more user-friendly entry model ideal for getting familiar with this type of kite. But for those with some experience and ready for maximum performance, the Sonic 4 is a logical and exciting upgrade. This type of kite is rarely found in our range, but this one simply couldn’t be left out.

The construction of the Sonic 4 is both light and strong. The TX-Light canopy and durable DLX+ leading edge ensure a solid, aerodynamic build that glides smoothly through the air and responds instantly to steering input. The updated shape reduces drag and improves airflow, resulting in fast, controlled maneuvers. Its low weight also makes this kite a true lightwind specialist.

Where tubekites struggle in light winds, the Sonic 4 truly comes to life. Thanks to its efficient profile, the kite remains stable in the air and quickly generates enough power for jumping, looping, and riding upwind. It’s also very well-suited for lightwind foiling. The internal structure has been optimized for faster inflation during launch and offers easier relaunch after a crash compared to previous Sonic models. Even in gusty conditions, the kite holds its shape well and remains comfortable to fly.

The Performance Tuner and Profile Momentum Adjuster allow you to fine-tune the Sonic 4’s flight behavior to match your personal preferences and the conditions. Whether you're after softer loops, less bar pressure, or more pop — the setup can be easily adjusted. With the help of the Bridle Check Tool, your tuning remains precise even after extensive use.

In short, the Flysurfer Sonic 4 Kite flies differently from an inflatable kite. If you're new to this style, it's best to take a look at the Soul. But for those ready for next-level performance, the Sonic 4 is truly a unique kite packed with performance and hangtime.

Note: Flysurfer uses fixed colors per kite size, so color choice is not available!

Flysurfer Sonic 4 Kite Specifications

• Closed cell foilkite
• Big Air | Freeride | Hydrofoil
• For advanced riders
• TX-Light 34g triple ripstop canopy
• DLX+ 44g durable leading edge
• Performance Tuner + Profile Momentum Adjuster
• Wide wind range
• Lightweight construction
• Bridle Check Tool
• Compatible with: Flysurfer CONNECT, FUSION, FORCE, and SYNC bars
• Available sizes: 6 / 8 / 10 / 12 / 15 / 18