Flysurfer / 2026
Sonic 5
Ted's Pickbig airfoilclosed-cellhangtime
The Flysurfer Sonic 5 is a groundbreaking closed-cell foil kite designed for big air. Combining ram-air efficiency with water relaunchability, it delivers massive hangtime and unique boosting characteristics unlike any LEI kite.
Best for: Big air riders wanting the unique boost and hangtime of a foil kite
Review verdict
Light-wind hangtime monster, once you earn it.
4.2/ 5 review synthesis
Strength: Huge lift and hangtime; 1–4 extra seconds per jump versus an LEI
Tradeoff: Much heavier bar and steering pressure, and far slower than an LEI
Evidence: 1 independent source · Jason Montreal
Read the full evidence-backed verdict ↓Style Placement
Riding Style
FoilBig Air
Kite Shape & Aspect
Low Aspect · C-KiteHigh Aspect · Bow
Specifications
Aspect Ratiovery high
StrutsStrutless
Bar TypeLow-V
Turning Speedmedium
Low-End Power8/10
Depower Range7/10
Relaunchmedium
Wind Range8–35 knots
Sizes7, 10, 12, 15m
Review Summary
Independent sourcesBased on 1 independent source. Each source is labeled below; brand-made content is never used in ratings.
4.2/ 5.0
A light-wind foil kite with exceptional upwind drive, lift and hangtime; once Jason learned its timing, it clearly outjumped a 15m Juice D/LAB in 15–20 knots. It is slow and heavy compared with an LEI and unforgiving in rain, gusty spots or sub-12-knot lulls, where it can be hard to relaunch. Setup and bridle tangles add hassle.
Pros
- +Huge lift and hangtime; 1–4 extra seconds per jump versus an LEI
- +Exceptional upwind performance in light wind
- +Holds its shape and resists wingtip folds
- +Rides in lulls where similar-sized LEI riders stall
- +Jumps get higher more consistently once timing is learned
Cons
- −Much heavier bar and steering pressure, and far slower than an LEI
- −Hard or impossible to relaunch once wet below about 12 knots
- −Gusty spots, offshore land wind and rain sharply raise the risk
- −Steep learning curve for jumps, heli loops and landings
- −Bridle tangles and fiddly setup
Best for
Experienced twin-tip riders with clean, steady wind and safe launches who want maximum light-wind boost and hangtime.
Not for
Riders at gusty, crowded or debris-strewn spots, or anyone wanting simple water relaunch.
Distilled from reviews by: Jason Montreal Independent
Video Reviews
Jason MontrealIndependent
Plus-Sized Kite ReviewsReview takeaway
Jason (105 kg) found the 15m Sonic 5 far slower and heavier to steer than an LEI, and hard to keep flying or relaunch below about 12 knots or in rain and gusty spots. Once his timing clicked he jumped higher more consistently than on the Juice D/LAB, with one to four extra seconds of hangtime.
Jason MontrealIndependent
Plus-Sized Kite ReviewsReview takeaway
In his first-ever foil kite session, Jason was struck by how much power and upwind ability the 15m Sonic 5 had in 15–18 knots, and it held its shape despite his piloting mistakes. The slow flight needs new timing: his first jumps reached 5–8m with around six seconds of hangtime, and the bridle tangled badly once the kite was down.
Rider Reviews
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