Siux
Electra ST4 Pro 2025
The Siux Electra ST4 Pro 2025 is Siux's attacking diamond with 12K TeXtreme and high balance. Power 9 for experts prioritising direct overhead power over comfort.
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Explosive • Control focused • Forgiving
The Siux Electra ST4 Pro 2025 is Siux's attacking diamond, 12K TeXtreme Carbon face, EVA Premium core, high balance. Power 9, comfort 6.
The Siux Electra ST4 Pro 2025 weighs 360–375g and has hybrid shape, between teardrop and diamond. Balance is even, profile 38mm. Face is 15K carbon with rough sandblasted finish. Core is EVA Hard: direct power, less forgiving than soft EVA.
Hybrid shape explained: A hybrid has teardrop sweet spot position and balance, but a broader head nearer diamond. This gives more sweet spot than a classic diamond while retaining the attacking qualities of a high profile.
The frame combines 3K carbon with Aramid fibres. Aramid (bulletproof vest material) adds flexibility and impact absorption to an otherwise stiff carbon frame. ShockOut anti-vibrators, two integrated dampers at the racket-head base, cushion remaining vibrations. Technically considered for a brand with less distribution outside Spain.
Control is central: 9/10 and 8.8/10, both sources agree. The 15K carbon face gives direct, readable feedback on every shot. One reviewer describes it aptly: "precise placement on attacking shots, bandeja and víbora." A racket telling you what you are doing.
Smash is the second priority. Overhead feel is described as "thrilling pop", combining hard EVA core, 15K carbon stiffness and a hybrid head maximising stroke energy in overhead position. Notably strong for a hybrid (not pure diamond).
Spin is rated 9/10. Rough sandblasted finish "enhances ball spin for precision and dry shots", strong for víboras and sliced attacks. Surface design and playing experience confirm sliced-spin potential.
Comfort is rated 7/10. Hard EVA core is decisive, off-centre contact felt immediately. ShockOut dampers help but do not fully offset core hardness. Players sensitive to hard contact should choose a softer alternative.
Electra ST4 Pro is a diamond (high balance, more power), Diablo Pro 4 a teardrop (medium balance, more control and sweet spot). For primarily net attacks: Electra. For all-round play: Diablo Pro 4.
Electra ST4 Pro 2025 has diamond shape (high balance, more power focus), while Electra Pro 2026 is teardrop (more versatility). They are really two different profiles. For a deliberately attacking Siux diamond at a lower price, ST4 Pro 2025 remains solid. At a €120–€150 sale price, strong value. At a comparable 2026 price, choose Electra Pro 2026 for versatility.
Advantages
12K TeXtreme Carbon face, high TeXtreme stiffness-to-weight ratio for explosive power
High-balance diamond, optimal for overhead attackers and smash specialists
EVA Premium core for good energy transfer
Siux's proven Electra construction in the attacking line
Considerations
Comfort 6, high 12K TeXtreme stiffness, unsuitable for arm sensitivity
Diamond shape requires overhead technique, not for beginners
Less reviewed than the Siux Diablo line in external benchmarks
What you will notice as a player
The smash gets plenty of easy power; you do not need a full follow-through to put the ball away.
A balanced racket that responds predictably in most situations.
Off-center contact is penalized: hitting just outside the sweet spot loses power and control.
In long matches you feel more in your arm; the core offers little cushioning, so the load builds up.
The racket offers little help in defense; returning balls off the glass takes considerable effort.
At the net you react a little more slowly: the weight sits forward, so quick adjustments take more effort.
Which shots are affected most?
| Situation | What will you notice? |
|---|---|
| Defense | Little help: you must guide balls off the glass and keep them deep yourself. |
| Volley | Comfortable and stable; aiming is easy and you keep the ball low. |
| Bandeja | Easy to control: the ball stays reasonably low and predictable. |
| Vibora | Very explosive: plenty of speed and bite, a natural shot for this racket. |
| Smash | Its strongest point: maximum power with little effort, sending the ball away like a rocket. |
| Block | The forward weight makes quick blocks more demanding than with an agile racket. |
| Off-center ball | Unforgiving: outside the sweet spot, both speed and accuracy drop noticeably. |
Well suited to
Less suited to
This racket is likely to suit you if you…
want more power and strength in your smash
like to play an attacking, explosive game
This racket may disappoint if you…
often have to play from defense
want a light and agile racket
want to react quickly to hard-hit balls
You will probably appreciate this racket if you…
- •want to finish points with power from the back of the court;
- •value an explosive smash and vibora more than comfort;
- •want a balanced racket that handles every shot;
You may run into limitations if you…
- •do not consistently hit the sweet spot yet: the small margin penalizes errors heavily;
- •are sensitive to arm or elbow discomfort;
- •defend often and want help from the face;
- •value quick hands at the net more than power;
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Personal advice
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Indicatieve marktprijs
€160 ·