Interactive 3D available

Siux · Electra line · 2025

Electra ST4 Pro

Hybrid-shaped power racket with a hard EVA core and a 15K carbon face.

Platform-created modelAdvancedPowerAll-roundSpecs unverified

Shape: Hybrid
Weight: 360–375 g
Balance: Medium-high
Feel: Hard

Best price

€134.90

Platform score 8.4/10

The Electra ST4 Pro uses a hybrid head, between teardrop and diamond, for power with a little more forgiveness. Listings mention a medium-high balance near 26 cm, a hard EVA core, a 15K carbon face and a carbon/aramid frame.

Who is this racket for?

Best for: Players who want power without a pure diamond's demands.
Playing style: Power / All-round
Level: Advanced
Recommended for: Advanced players who attack a lot but still defend from the back.
Not ideal for: Players who want a soft, comfortable feel.

The teardrop/hybrid head widens above the middle. Compare the front view with a round racket.

The balance point is shown in the edge view with the balance overlay.

Platform evaluation: our interpretation of the specs, not a manufacturer claim.

What reviewers say

2 sources summarisedChecked 7 Oct 2026

Franco Stupaczuk's racket. Reviews find it powerful without losing agility in fast exchanges. The hard EVA core responds quickly, and the medium-high balance keeps it stable.

What testers like

Power without losing speed of hand
Quick, direct response
Stable on every shot

Watch out for

Hard core is less comfortable on slow balls

Suits: Advanced, aggressive players who still want control.

Paladex’s read

A fast-handed attacking racket. It is a good middle ground if a diamond feels too clumsy but a round racket feels too tame.

Our opinion, drawn from the sources below. We haven’t play-tested this racket.

Sources

Platform scores

Overall platform score

8.4/10

Sample evaluation

Power8.3

Control8.6

Maneuverability7.0

Forgiveness6.5

Sweet spot6.9

Defence7.3

Attack8.5

These are Paladex's own evaluation scores (methodology v0.2 (sample)), not manufacturer-certified measurements. Scores are on the same 1–10 scale across the site.

Specifications

UnverifiedCompiled from public retailer and manufacturer listings on 5 Oct 2026. Not yet verified against the manufacturer.

Brand: Siux
Model: Electra ST4 Pro
Collection: Electra
Year: 2025
Shape: HybridSits between teardrop and diamond. The head is wide high up, but the shoulders are softer than a full diamond. Usually aims for diamond-like power with a slightly larger, more forgiving sweet spot.
Weight: 360–375 gA mid-range weight that most adult players handle comfortably, balancing stability and speed.
Balance: Medium-high · ≈ 268 mm (estimated)Where the weight is concentrated. Extra weight behind the ball on overheads, while staying manageable in quick exchanges. Higher balance generally favours power, lower balance usually improves maneuverability.
Thickness: 38 mmA full 38 mm profile (the regulation maximum) gives more stability and power.
Frame material: 3K carbon and aramid
Face material: 15K carbon
Core: EVA HardMaximum precision and power when you hit fast. Slow balls need more effort to push, and more vibration reaches the arm.
Surface: RoughGrips the ball for more spin on slices, kick serves and viboras.
Hardness: HardA firm, dense core.
Sweet spot: Slightly above the middleDerived from the shape class. The 3D zone is an illustration, not a measurement.
Grip & handle: Standard handle with overgrip

Where to buy

Best current price

€134.90

at Padel Proshop

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Padel ProshopPartner
In stock · checked 17 Oct 2026
€134.90
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Padel NuestroPartner
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€134.95
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Ofertas de PadelPartner
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€134.95
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Our take

Sample editorialPaladex editorial (sample)

Power with a safety margin

The hybrid head gives it attacking punch and a slightly friendlier sweet spot than a diamond.

A hard core and medium-high balance make the Electra ST4 Pro feel powerful and direct. The hybrid shape widens the hitting zone a little compared with a diamond, which helps on defensive shots.

Pros

Strong power
More forgiving than a diamond
Precise on fast shots

Cons

Firm feel
Less comfortable on slow balls

Verdict

A versatile attacking choice for advanced players.

3D inspection notes

In front view, compare its outline with the diamond and teardrop rackets in overlay compare.

Photos

About this 3D model

Platform-created model

3D model built by Paladex to represent this racket. Not supplied by the manufacturer.

Source: Paladex 3D: modelled from the brand's product photos, supplied by the site owner
Model version: 1.0.0-8rjw
Download size: 399 KB
Model notes: Platform-created model: geometry traced from the front photo, print projected from it; edge details approximated.

How our 3D models are made and labelled