Flysurfer SONIC V4 Foil Kite

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  • Flysurfer SONIC V4 Foil Kite - 6m
  • Flysurfer SONIC V4 Foil Kite - 8m
  • Flysurfer SONIC V4 Foil Kite - 10m
  • Flysurfer SONIC V4 Foil Kite - 12m
  • Flysurfer SONIC V4 Foil Kite - 15m
  • Flysurfer SONIC V4 Foil Kite - 18m
$1,949.00 - $2,949.00


Flysurfer SONIC V4 Foil Kite

Big-Air, Hydrofoil, Freeride

Total package consists of:

  • SONIC Kite only
  • UNIVERSAL Kite bag
  • LIGHT Bag
  • Compression Strap
  • Trim Checker
  • Sandbag
  • Repair Kit
  • Kite Safety Guide


The SONIC excels in performance, offering powerful lift and incredible hangtime. Pilot a light and streamlined design that maximizes airflow and minimizes drag. The kite slices through the air with minimal resistance, enhancing agility, speed, and responsiveness. Predictable in rough conditions to cover a wide wind range for advanced riders pushing limits to shatter records. Brace yourself for unparalleled acceleration, adrenaline-fueled adventures, and insane boosting capacity!



Constructed from state-of-the-art, lightweight materials to obtain an optimal power-to-weight ratio. The high-strength sail is a triple-ripstop 34 g/m² TX-Light, and the leading edge features a very durable 44 g/m² DLX+ fabric that protects against abrasion. All SONIC components are designed for maximum performance on any terrain. The streamlined construction ensures that the kite remains agile and highly maneuverable while maintaining peak performance.

DLX+ Material


The performance tuner is a knot ladder integrated into the C-pulley line to modify the camber of the kite. Moving the Z-Main Line affects the bar forces and performance of the kite. Shortening increases low-end power and steering/holding forces. Lengthening does the opposite, decreasing brake line tension and steering/holding power. With adjustable settings for the brake lines, power delivery, and depower, you can optimize, based on wind conditions and personal preferences, to unlock the kite’s maximum potential.

Rigid Foil Technologie


The bridle check tool makes it easier to compare the bridle line lengths. At each level (A, B, C, Z), on each wing side of the foil kite, black markings make comparing front and back main line lengths easy (see line plan). To restore the flight characteristics, length differences between B and C levels relative to A level must be annulled by moving the rings on the mixer. To maintain performance and stability, we recommend regularly checking using the bridle check tool, if the product is used intensively.

Verstärkte Konstruktion


The PMAs are knot ladders that are sewn onto the profile in inside the foil kite. They sit on the upper and lower sail between the A and B levels. By shortening the knot ladders, the profile camber can be adjusted, which gives the foil kite more performance or stability. If a change is made, it should be made symmetrically. We recommend the help of a FLYSURFER sales partner to ensure correct settings of the Profile Momentum Adjuster.

Double Cordwise Ballooning

Wind Range:

SIZE 6 8 10 12 15 18
Wind Range (knots) 18-45 15-38 12-33 10-26 6-21 5-19
Sweet Spot (knots) 20-38 18-33 15-25 12-22 8-18 7-16

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