North Sonar S185 Stabilizer

The North Sonar S185 Stabilizer is a rear wing in North's Sonar foil system, sitting within the Surf series of stabilizers. Built from pre-preg carbon with titanium hardware, it carries a surface area of 185 cm² and weighs just 200 g. North designed the S185 to pair with the smaller front wings in their SF (Surf) series, creating a matched setup tuned for surf-style foiling and pump foiling at low to moderate speeds.

The stabilizer's outline uses minimal sweep, which shortens the effective fuselage length compared to more swept-back tail wings. Its tips curve upward, adding directional hold during takeoffs and through carving turns. The wingtips are removable, so riders can pull them off to create a flatter, looser-feeling stabilizer when they want less rear-wing grip.

• Surface Area: 185 cm²
• Weight: 200 g
• Construction: Pre-preg carbon
• Hardware: Titanium screws (M8×16 mm included)
• Accessories Included: Stabilizer cover, screw pack
• Series: Surf

The S185 suits intermediate to advanced foilers riding surf-oriented setups. Its moderate span delivers an aspect ratio high enough for efficient pumping without sacrificing responsiveness mid-turn, making it a practical choice for riders who split time between catching swells and linking pump runs between sets. Paired with North's smaller SF front wings, the setup targets low stall speeds and forgiving angle-of-attack behavior, which benefits riders still refining their pump technique as well as experienced surfers pushing tighter carves.

Because the S185 sits in the Surf series rather than the Freeride or High Speed lines, it is not optimized for high-wind blasting or top-end speed. Riders primarily chasing straight-line efficiency or racing performance would look elsewhere in the Sonar stabilizer range.

North's Sonar stabilizer catalog spans four distinct series — Surf, Freeride, High Speed, and Glide — with 16 models total. Within the Surf series, the S185 is the mid-size option, flanked by the smaller S145v2 (145 cm²) and the larger S215 (215 cm²). Stepping down to the S145v2 sheds area for a looser, more maneuverable feel, while stepping up to the S215 adds stability and lift at the tail. All three Surf-series stabilizers share the same low-sweep, upturned-tip design language.

For riders considering cross-series alternatives at a similar size, the Freeride S192 (192 cm²) offers a more all-round balance of speed and control, while the High Speed S178 (178 cm²) trades turning forgiveness for reduced drag at higher velocities. Choosing between these comes down to whether the rider prioritizes surf-style carving or versatile freeride performance.