Description
Top speed with control
Designed for maximum speed with the pitch stability that powered riding demands, the S158v2 is recommended for light riders going very fast with small, fast front wings (HA550 to HA750 and MA500v2 to MA850v2). Its profiles are tuned for efficiency at medium and high speed, and its dihedral shape (seen from the front) gives a more planted feel that inspires confidence when you're powered up, going very fast and riding upwind. The high-modulus pre-preg carbon ensures optimal stiffness and direct response, and its thin profiles reduce drag.
Area 158 cm² · Span 380 mm · Aspect ratio 9.1 · High-modulus pre-preg carbon
Who it's for
- Light riders going very fast with small HA or MAv2 wings.
- Anyone looking for a planted feel for powered riding and going upwind.
What makes it special
01 One of North's fastest
One of the fastest stabilizers in the range.
02 Thinner profile
Less drag.
03 Aspect ratio of 9.1
Less drag for more speed.
04 No tip ventilation
You can breach the tips in a turn without it ventilating.
05 Easy to recover
It warns you early when it breaches and recovers easily.
Sonar stabilizers
| STABILIZER | AREA | SPAN | ASPECT RATIO |
|---|---|---|---|
| S122 | 122 cm² | 370 mm | 11.2 |
| S145v2 | 145 cm² | 350 mm | 8.4 |
| S142 | 150 cm² | 380 mm | 10.2 |
| S158v2 | 158 cm² | 380 mm | 9.1 |
| S178 | 180 cm² | 380 mm | 8.1 |
| S185 | 185 cm² | 350 mm | 6.6 |
| S208 | 208 cm² | 380 mm | 7.0 |
| S210 | 210 cm² | 350 mm | 5.9 |
| S215 | 217 cm² | 368 mm | 6.3 |
| S238 | 238 cm² | 430 mm | 7.8 |
| S320 | 320 cm² | 430 mm | 5.9 |
Official North data; this stabilizer is in bold.
Technology and construction
- Construction: high-modulus pre-preg carbon: optimal stiffness and direct response.
- Hardware: titanium screws, light and corrosion-free.
- Mounting: mounted on top of the fuselage, out of the front wing's turbulence.
- Sonar system: compatible with all Sonar aluminium and carbon fuselages.
- Includes: stabilizer, cover and screw pack C (M8 x 16).
Which one to choose?
- Sonar S142 (150 cm²): smaller, needs less front-foot pressure.
- Sonar S178 (180 cm²): bigger, needs more front-foot pressure.
Pair it with: MA500v2 front wing, MA600v2 front wing, HA550 front wing, Sonar carbon fuselage and spare screw pack C.
Frequently asked questions
Which front wings should I pair it with?+
According to North's compatibility chart: MA500v2, MA600v2, HA550, HA650 and HA750.
What changes with a bigger or smaller stabilizer?+
According to North, the stabilizer creates a downward force that stops the front wing from nosediving: a bigger one needs more front-foot pressure, and a smaller one, less.
Which screws does it use?+
It comes with screw pack C (M8 x 16). North recommends applying marine grease to the screws every time you assemble it.
Is it compatible with my foil?+
Yes, if you have North's Sonar system: it fits all their aluminium and carbon fuselages.
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