Siux is the brand of some of the best players in the world: Leo Augsburger, Franco Stupaczuk and Tino Libaak. At Holland Padel we currently have six Siux models in stock, from the Electra and the Fenix to the Pegasus and the Diablo. They are all made of carbon and built for the advanced player, but their character differs considerably: one is rock hard and head-heavy, another softer and easier to handle.
We test the rackets in our range ourselves on court. In this list you can read for each Siux what makes it different, who it suits and who it does not, so you can choose the right one without any doubt.
Quick choice: most versatile: Electra ST4 · maximum power: Fenix Pro 2026 · power and control in a teardrop: Electra Pro 2026 · attacking with a teardrop: Pegasus Pro 2026 · softest Pro model: Diablo Pro 2026 · the Fenix shape with 24K carbon: Fenix Pro 5 Black.
Our choice in brief
For us, the Siux Electra ST4 is the best and most versatile Siux. It has a hybrid shape, a balance between medium and medium-high and a hardness of 7.5 out of 10. That puts it exactly between the softer Diablo and the rock-hard Fenix. You can finish hard with it and still keep enough feel on your volleys and in defence. It is the racket Franco Stupaczuk played with in 2025.
If you mainly want to finish overhead, choose the Fenix Pro 2026 from Leo Augsburger: diamond shape, high balance and 10 out of 10 hard. If you are looking for the newest Electra, the Electra Pro 2026 is a fraction harder (8 out of 10) and has a true teardrop shape.
The best Siux padel rackets of 2026
1. Siux Electra ST4 (Franco Stupaczuk): the best and most versatile
The ST4 has a hybrid shape, a balance between medium and medium-high and weighs 355 to 375 grams. The face is 15K carbon on a 3K carbon frame with an EVA core, and Siux gives it a hardness of 7.5 out of 10. That makes it slightly softer than the new Electra Pro and a lot softer than the Fenix, while the balance just above medium gives you enough weight in the head for a solid smash. Siux gave it a new bridge for more manoeuvrability and reinforcements for a larger sweet spot. Choose it if you want to be able to do everything on the left or right side: attack, volley and defend with one racket. Not if you are just starting out: the ST4 is also a firm carbon racket for advanced players.
View the Siux Electra ST42. Siux Fenix Pro 2026 (Leo Augsburger): the most power
The Fenix Pro is Siux's hardest racket: diamond shape, high balance, 10 out of 10 hard, a 12K carbon face and a hard EVA core, at 355 to 375 grams. The weight sits high in the head and the face gives little, so a fast, well-executed arm swing generates a lot of speed on your smash. There are two colours with the same specifications: Black and Purple. Choose it if you are an attacker with good technique who finishes a lot of balls overhead. Not if you have problems with your wrist, elbow or shoulder, or if you have to defend a lot from the back: then it is stiffer and less forgiving than the Electra models.
View the Fenix Pro Black 2026 View the Fenix Pro Purple 20263. Siux Electra Pro 2026 (Franco Stupaczuk): power and control in a teardrop
The successor to the ST4 has a true teardrop shape, a medium balance and a 12K carbon face with a firm EVA core, at 355 to 375 grams. At 8 out of 10 it is half a point harder than the ST4. The surface is satin with a sand coating, which helps to put spin on the ball. Siux calls it all-round: it combines power and control, with a little more firmness than its predecessor. Choose it if you want the versatility of the Electra with a tighter, more direct feel. Not if you are coming from a soft racket and mainly want comfort: then it feels dry.
View the Siux Electra Pro 20264. Siux Pegasus Pro 2026 (Álex Chozas): attacking with a teardrop
The Pegasus Pro has the same teardrop shape and medium balance as the Electra Pro, but at 9 out of 10 it is clearly harder. The face is 12K carbon with a hard EVA core, the frame is carbon and it weighs 355 to 375 grams. Siux builds it for attack. So you get a hard, attacking face without the head-heavy diamond of the Fenix. Choose it if you play attacking padel but want to keep the racket manoeuvrable at the net. Not if you like a racket that adds pace to slow balls by itself: the Pegasus asks you to swing through yourself.
View the Siux Pegasus Pro 20265. Siux Diablo Pro 2026 (Tino Libaak): the softest Pro model
The Diablo Pro is also a teardrop with medium balance, but at 7 out of 10 it is Siux's softest Pro racket. The face is TeXtreme carbon, the core EVA and the surface has a 3D texture, at 355 to 375 grams. Softer does not mean tame here: Libaak plays with it at the highest level. It is a little less stiff than the other teardrops and forgives slightly more when you do not hit the ball cleanly. Choose it if you want power and control in a racket that is less stiff than the Electra Pro and the Pegasus. Not if you are looking for the hardest possible face: then go for the Pegasus or the Fenix.
View the Siux Diablo Pro 20266. Siux Fenix Pro 5 Black (Leo Augsburger): the Fenix with 24K carbon
The predecessor of the Fenix Pro 2026 has the same basis: diamond shape, high balance, 10 out of 10 hard, a hard EVA core and 355 to 375 grams, with a 3K carbon frame. The difference is in the face: 24K carbon instead of 12K on the 2026. Choose it if you want the Fenix shape and hardness and the 24K face. Not if you are not an attacker with good technique: it is just as demanding as the 2026 version.
View the Siux Fenix Pro 5 BlackEverything in one table
| Racket | Shape | Balance | Hardness (Siux) | Face | Player |
|---|---|---|---|---|---|
| Electra ST4 | Hybrid | Medium to medium-high | 7,5/10 | 15K carbon | Stupaczuk (2025) |
| Fenix Pro 2026 | Diamond | High | 10/10 | 12K carbon | Augsburger |
| Electra Pro 2026 | Teardrop | Medium | 8/10 | 12K carbon | Stupaczuk |
| Pegasus Pro 2026 | Teardrop | Medium | 9/10 | 12K carbon | Chozas |
| Diablo Pro 2026 | Teardrop | Medium | 7/10 | TeXtreme carbon | Libaak |
| Fenix Pro 5 Black | Diamond | High | 10/10 | 24K carbon | Augsburger (2025) |
All six weigh 355 to 375 grams. The hardness is Siux's own scale: 10 is the hardest.
The players behind the rackets
Leo Augsburger (Argentina, born in 2004) plays with Juan Lebrón and the Fenix Pro in 2026. Together they won the Brussels P2 in April, beating Coello and Tapia in the final. In the FIP ranking Augsburger is around 6th place. You can read more about him in Leo Augsburger: the Argentinian padel prodigy.
Franco Stupaczuk has played for Siux for years and has his own Electra line: the ST4 in 2025, the Electra Pro in 2026. This year he plays with Jon Sanz. Tino Libaak plays the Diablo Pro and has formed a pair with Gonzalo Alfonso since July; in Madrid they beat Lebrón and Augsburger. Álex Chozas plays with the Pegasus Pro.
How to choose the right Siux
Start with the shape. The Electra Pro, Pegasus and Diablo are teardrops with medium balance, the ST4 is hybrid and the two Fenix models are diamonds with high balance. The higher the balance, the more weight in the head: that gives speed overhead, but makes the racket less manoeuvrable on fast balls at the net. You will find more explanation in diamond, teardrop or round.
Then choose the hardness. From soft to hard: Diablo 7, ST4 7.5, Electra Pro 8, Pegasus 9 and the Fenix models 10. A harder face feels more direct and gives less; a softer face forgives more and is kinder to your arm. In doubt between two? Choose the softer one.
Be honest about your level. Siux builds all these rackets for advanced players. If you have been playing for less than a year or less than once a week, you will get more out of a more comfortable racket. In that case use our racket finder or read which padel racket suits you.
Frequently asked questions about Siux padel rackets
Which Siux padel racket is the best?
For us that is the Electra ST4: hybrid shape, balance between medium and medium-high and 7.5 out of 10 hard, which means it combines attack and defence best. For pure attackers the Fenix Pro 2026 is stronger.
Are Siux padel rackets suitable for beginners?
The rackets in this list are not. They are made of carbon, weigh 355 to 375 grams and are built for advanced players.
What is the difference between the Siux Electra ST4 and the Electra Pro 2026?
The ST4 is hybrid with 15K carbon and 7.5 out of 10 hard. The Electra Pro 2026 is a teardrop with 12K carbon and 8 out of 10: a fraction harder and more direct. Read the full difference in Electra ST4 vs Electra 2026.
What is the difference between the Siux Fenix Pro and the Electra Pro?
The Fenix is a diamond with high balance and 10 out of 10 hard, built for power. The Electra Pro is a teardrop with medium balance and 8 out of 10, with more balance between power and control.
Which racket does Leo Augsburger play with?
With the Siux Fenix Pro 2026. In 2025 it was the Fenix Pro 5.
Which racket does Franco Stupaczuk play with?
With the Siux Electra Pro 2026. In 2025 it was the Electra ST4.
Which Siux racket is the softest?
Of the 2026 Pro models it is the Diablo Pro of Tino Libaak, at 7 out of 10 on Siux's scale.
Our conclusion
If you are looking for one Siux that does everything well, take the Electra ST4: for us the best and most versatile of the line. If you mainly win points overhead, the Fenix Pro 2026 is Augsburger's racket and the hardest Siux makes. The Electra Pro 2026 and the Pegasus Pro are tighter teardrops, the Diablo Pro is the softer teardrop for those who want more feel.
The downside of the whole line: not a single Siux in this list is a comfort racket. Even the softest, the Diablo, is a carbon racket for advanced players. If you are looking for your first or second racket, you are better off with a softer model with a larger sweet spot.
Related blogs and news
- Siux 2026: Fenix Pro vs Pegasus Pro vs Valkiria
- Siux Fenix Pro 6 Purple: born to finish points
- Siux Fenix Pro Black vs Electra ST4
- Best teardrop padel rackets 2026
Sporting regards,
Team Holland Padel
