PadelReference
The Siux Electra Stupa Pro ST4 2025 delivers controlled aggression with an exceptional sweet spot and spin generation, making it perfect for advanced players. With its hybrid shape and medium-high balance, it provides the ideal blend of power and precision that Franco Stupaczuk demands in professional play.
Power
8.7/10
Control
8.2/10
Defense
7.8/10
Offense
9.0/10
Maneuverability
8.5/10
Padel Racket Review - Siux Electra Stupa Pro ST4 2025
Bowe is convinced that the racket, shoes, court are the problem, never his own abilities.
Our mission is to help you choose the right padel racket with clear, in-depth reviews that make it easy to level up your game.
We start with official specs, then break down each racket's key properties. Finally, we bring together trusted video and written reviews—summarised into one consistent, easy-to-read overview.
The Siux Electra Stupa Pro ST4 2025 stands as Franco Stupaczuk's official weapon of choice, evolving from its predecessor with a revolutionary redesign of its hole pattern. What immediately distinguishes this racket is the absence of holes in the central hitting area, creating a more rigid structure and significantly enhanced sweet spot. Featuring 15K carbon faces with a 20x40 weave pattern and a 3K carbon frame, this racket balances cutting-edge materials with performance-focused design choices. The medium-high balance and EVA Hard core deliver a controlled yet explosive response that perfectly reflects Stupaczuk's aggressive playing style.
How it plays..
Balanced Aggression with Enhanced Precision
On court, the Electra ST4 Pro immediately communicates its professional pedigree. The medium-high balance (265mm balance point) gives it noticeable head weight without feeling unwieldy, striking an excellent compromise between maneuverability and power generation. The EVA Hard core provides a firm, responsive feel that experienced players will appreciate, with excellent feedback on contact. The sweet spot is impressively large for a racket in this category, thanks to the innovative central area without holes, making it more forgiving than typical advanced rackets without sacrificing performance. Players who prefer aggressive baseline play and commanding net presence will extract the most value from this racket.
Defense
Responsive Control Under Pressure
From defensive positions, the ST4 displays remarkable adaptability. Despite its power-oriented character, the hybrid shape provides enough control for precise lobs and defensive shots when pushed back. The racket's structural rigidity shines here, offering stability and consistent response even on off-center hits. The anti-vibration technology with ShockOut anti-vibrators helps maintain comfort during extended defensive rallies, though the medium-hard feel remains noticeable. While not its primary strength, the racket's excellent maneuverability allows for quick transitions from defense to offense, which is essential for the modern counter-attacking style of play.
Attack
Explosive Power with Precision
This is where the Electra ST4 Pro truly excels. The combination of the hybrid shape, medium-high balance, and hard EVA core delivers devastating power on smashes and aggressive drives. The 15K carbon faces provide exceptional responsiveness and ball acceleration, while still allowing for precise placement. Spin generation is outstanding, thanks to the sandy finish that maximizes grip on the ball, making it ideal for players who rely on topspin viboras and aggressive bandeja shots. The improved structural rigidity compared to the ST3 version means that even the most powerful shots remain controlled and targeted – exactly what advanced players demand when looking to finish points.
Netplay
Precision and Quick Reflexes at Net
At the net, the ST4 Pro demonstrates excellent versatility. The reinforced frame noticeably improves torsional resistance compared to previous models, particularly on volley shots and fast exchanges. This translates to increased precision and control in tight net play situations. The racket's balance provides enough weight behind volleys to be effective without sacrificing the quick maneuverability needed for reflexive net play. Players will appreciate the firm feel on contact, which provides clear feedback and confidence for placing shots precisely where intended. For aggressive net players who like to dominate the front court, this racket provides both the touch and punch needed to control exchanges.
Our Advice for New Players
Not Your First Step Into Padel
Let's be honest – this is not a racket designed with beginners in mind. The medium-hard feel, power-oriented characteristics, and professional-grade performance demand a level of technique and physical conditioning that most beginners haven't yet developed. If you're new to padel, you'll likely find the ST4 Pro physically demanding and potentially frustrating as it won't compensate for technical shortcomings. The premium price point also makes it a significant investment for someone still exploring the sport. Consider starting with a more forgiving, control-oriented racket and perhaps revisit the Siux line when your skills have advanced.
Our Advice for Intermediate Players
A Racket to Grow Into
For intermediate players with solid fundamentals and athletic ability, the Electra ST4 Pro represents an aspirational choice. While challenging, it could serve as a racket to grow into if you're committed to advancing your game and developing the technical skills needed to harness its capabilities. You'll appreciate the improved sweet spot compared to many advanced rackets, which provides some forgiveness while still delivering professional-level performance. However, be prepared for an adjustment period and possibly some arm fatigue during longer sessions until you adapt to its characteristics. Intermediate players with particularly aggressive playing styles and good technique will find the most success with this racket.
Competitive level
Professional Performance for Demanding Players
Advanced players will immediately recognize and appreciate what makes the ST4 Pro special. The racket delivers exceptional power with surprising control, allowing you to dictate points with authority while maintaining precision. The enlarged sweet spot compared to the previous model provides more consistency without compromising the feedback and responsiveness that advanced players require. You'll particularly notice the improved torsional resistance during fast exchanges and the excellent spin potential on all shots. If you're an aggressive player who loves to attack from all court positions and has the technical ability to handle a medium-hard feel, this racket will reward you with professional-level performance that can elevate your competitive game.
Research & References
Our mission is to help you choose the right padel racket with clear, in-depth reviews that make it easy to level up your game. We start with official specs, then break down each racket’s key properties. Finally, we bring together trusted video and written reviews—summarised into one consistent, easy-to-read overview.
Improved sweet spot compared to ST3 version
Excellent spin generation with rough surface texture
Powerful, controlled smashes ideal for offensive play
Great structural stability for precision volleys
Perfect balance between power and control for advanced players
Some durability concerns reported by users
Can be physically demanding over long play sessions
Not forgiving enough for intermediate or beginner players
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Skill Level
Advanced
Court Position
Both
Play Style
Power
Best at: Offense (9.0/10)
Average: 8.4/10
PadelReference
€224.90
ViewThe ST4 has a larger sweet spot with no holes in the central area, improved structural rigidity, and better torsional resistance compared to the ST3, particularly noticeable on volleys and fast strikes.
While extremely capable, the ST4 is primarily designed for advanced/professional players, as its medium-hard feel and power-oriented characteristics require developed technique to fully utilize.
The ST4 excels with aggressive, attacking play styles that capitalize on its power generation, spin potential, and medium-high balance for devastating offensive shots.
The ST4 weighs between 360-375g with a medium-high balance point of 265mm, offering powerful smashes without feeling too head-heavy.
Yes, Siux is a respected professional-grade brand that sponsors top players like Franco Stupaczuk, known for high-performance rackets with cutting-edge technologies and materials.
The ST4 Roller is a limited special edition with custom graphics and typically the same performance characteristics as the standard ST4 Pro, designed for collectors and fans of Franco Stupaczuk.
For advanced players seeking professional-level performance, the premium price (€150-€343) is justified by its exceptional power-control balance, spin generation, and advanced technologies.
Weight
Medium (356–370G)
Touch
Medium-Hard
Core
Hard
Texture
Rough
Year
2025
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