Select your stab with numbers, not guesswork.
Downwind stabs
Pick a brand, then two or three of its stabilisers, your downwind front wing and your fuselage, and compare what each stab changes: stability, glide, speed.
Budget
| Stab A | Stab B | Stab C | |
|---|---|---|---|
Selection | |||
| Year | |||
| Price | |||
| Area | |||
| Span | |||
| Chord (mm) | |||
| Aspect ratio | |||
| Stab type | |||
| Carving index | |||
| Power lost at best glide speed | |||
Legend
- Year
- Model year published by the brand or a retailer. "≈ 2025": the brand publishes no model year, so the year is estimated from the model's release date (product page going live, announcement, launch video).
- Price
- Public price of the stab alone, in euros, taken from the brand's website in October 2026, excluding any discount. The price links to the page where it was found.
- Area, span and chord
- Dimensions published by the brand ("—" when not given). The chord is the stab's mean width, area ÷ span.
- Aspect ratio
- Span² ÷ area. A long, narrow stab glides better; a short, wide stab turns more easily.
- Stab type
- What the stab does to your foil, computed with the chosen front wing and fuselage (stab area, distance between the two wings, front wing area and chord):
- Lively. Responsive, faster foil, quick and light pumping, but needs precise footwork.
- Balanced. In between.
- Stable. Forgiving, damped foil, fuller pumping strokes, but slower and harder to pump.
- Carving index (0-10)
- The higher the index, the livelier the stab and the easier tight turns are. The lower it is, the more stable it is: it holds its line and forgives mistakes. Computed from the stab's span and aspect ratio.
- Power lost at best glide speed
- What the stab costs the rider, in watts, at the speed where the chosen front wing glides best: the stab pushes down to balance the foil, and that load plus its friction slow you down. Fewer watts means a setup that glides further. An asterisk (*) marks a stab whose span is not published: part of the drag is then not counted.
About this comparator
Downwind stabiliser comparator
Compare a foil brand's stabilisers (rear wings) with your downwind front wing and fuselage: area, span, chord, aspect ratio, stab type (lively, balanced or stable), carving index, power lost and price.
Small or big stab?
A big stab makes the foil stable and forgiving, reassuring in chop, but slower and less gliding. A small stab is faster and turns better, with a foil more sensitive to footwork. A longer fuselage also adds stability.
Pages by brand: AFS, Alpinefoil, Armstrong, Axis, Duotone, F-One, Gong, Indiana, Ketos, North, Sabfoil, Sroka, Takoon.