Siux Electra ST2 Flex 2026
Firmness
- This model
- Soft
- Alternative
- Medium-soft
The quick take

The maker's published specifications, each with its source below. Your own trial decides the fit.
See this model’s specifications and buying options.
Newer edition: Nox Pro Cup Soft 2027 is sold at Europe Padel Shop, International Padel Shop and Tienda Padelpoint, with delivery to Spain, Portugal, Germany, Austria, Belgium, Bulgaria and 29 more countries.
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Before you choose: Our record has no measured balance point for this model. Ask to try the racket with your usual grips and fitted weights.
Consider it if help on slower swings and off-centre contact is your priority. Forgiveness scores 72/100 in our specification model.
Based on 4 of 5 published model inputs, not a play test.
Nearest calculated profiles with at least four published inputs and a documented specification difference. Shop payments and stock do not affect this order. Overlapping weight ranges do not guarantee a lighter individual racket; face materials alone do not establish feel.
Firmness
Weight
Published specifications, not our play-test findings. Each value links to its source.
Reference price published at noxsport.com: €139.99 · 28 October 2026. It is not the price of the shop in the buy button.
| Spec | Published value | Evidence |
|---|---|---|
| Shape | Teardrop | FORMA: Gota / Lágrimanoxsport.com |
| Weight | 360 to 375 g (12.7 to 13.2 oz) | PESO: 360 - 375gnoxsport.com |
| Core | Soft, HR3 Soft EVA | NÚCLEO: HR3 SOFT EVA. Tacto: Softnoxsport.com |
| Face | Fibreglass Alum (aluminised fibreglass) | CARA: Fibra Vidrio Alumnoxsport.com |
| Frame | Carbon | MARCO: Carbononoxsport.com |
| Thickness | 38 mm (1.5 in) | ANCHO: 38 mmnoxsport.com |
| Textured face | Yes | SUPERFICIE: Exclusive Spin. EXCLUSIVE SPIN: Tecnología que incluye dos tipos de acabado rugoso en la superficie de la cara: el 3D hexagonal ubicado en el centro de la pala y el acanoxsport.com |
| Price | €139.99 | 139.99 EUR (schema.org offer)noxsport.com |
Collection note: Core hardness value is taken from the page's 'Tacto' field, which Nox publishes for the racket as a whole, not for the foam alone. The page contradicts itself slightly: the spec field says 'Tacto: Soft' while the description says the HR3 Soft EVA core 'ofrece una sensación de golpeo con dureza intermedia'. The spec field was used. The page also publishes POTENCIA: 90/100 and CONTROL: 95/100. Struck-through price shown is 199,99 €.
These ratings are calculations from published specifications, not measured playing results or our play tests.
Not published for this racket: balance. Each missing input counts as the neutral midpoint, so treat these ratings as less certain than for a racket with all five.
The versions the maker sells in the same line and year, with the specifications each one publishes. Ratings are calculated from those specs by our formula, not play-tested.
| Model | Shape | Weight | Balance | Core | Face | Power | Control | Comfort |
|---|---|---|---|---|---|---|---|---|
| Nox AT10 Pro Cup Soft 2026 (this page) | Teardrop | 360 to 375 g | not published | Soft, HR3 Soft EVA | Fibreglass Alum | 51 | 50 | 75 |
| Nox AT10 Pro Cup HARD 2026 | Teardrop | 360 to 375 g | not published | Medium-hard, HR3 HARD EVA | Fibra Vidrio Alum | 51 | 50 | 51 |
| Nox AT10 Genius Ultra Light 2026 | Teardrop | 310 to 325 g | not published | Soft, HR2 | Fiber Glass | 42 | 50 | 82 |
| Nox AT10 Luxury Genius 18K Alum 2026 | Teardrop | 360 to 375 g | not published | Medium, MLD Black Eva | Carbon Fiber 18K Alum | 51 | 50 | 39 |
| Nox AT10 Luxury Genius 12K Alum Xtreme 2026 | Teardrop | 360 to 375 g | not published | Medium-hard, HR3 Black EVA | Carbon Fiber 12K Alum Xtrem | 51 | 50 | 31 |
| Nox AT10 Luxury Genius Attack 18K Alum 2026 | Diamond | 360 to 375 g | High | Medium, MLD Black Eva | Carbon Fiber 18K Alum | 83 | 10 | 31 |
| Nox AT10 Luxury Genius 12K Alum XTREME Lite 2026 | Teardrop | 355 to 365 g | not published | Soft, HR3 WHITE EVA | Carbon Fiber 12K Alum Xtrem | 48 | 50 | 57 |
Read the published specifications, prices and buying differences side by side.
How Nox compares as a brand: Bullpadel vs Nox · Head vs Nox · Adidas vs Nox · Nox vs StarVie
In the specifications both publish, the Nox AT10 Pro Cup Soft 2026 differs in core: Soft, HR3 Soft EVA against Medium-hard, HR3 HARD EVA; face: Fibreglass Alum against Fibra Vidrio Alum. Our formula rates it 51 for power, 50 for control and 75 for comfort, against 51, 50 and 51.
On its published specification the Nox AT10 Pro Cup Soft 2026 is an all-round racket. It rates 51 for power and 50 for control on the PadelTrue model, mainly because of its teardrop shape.
It rates 72 out of 100 for forgiveness. That is a forgiving build, the kind usually recommended to newer players. The manufacturer lists its level as "Avanzado".
It rates 75 out of 100 for comfort, a rating built from core firmness, face material, balance and weight, describing feel and physical demand. That is on the gentle side of the index. This describes the build, it is not medical advice.
€139.99 on noxsport.com when checked on 28 October 2026.
The published weight is 360 to 375 g (12.7 to 13.2 oz).