“The ST4 iteration of the Stupa Pro sharpened the recipe: same even-balanced hybrid intent, same punchy EVA core, with a strike that feels a touch more immediate than the ST3 it replaced.”
87/100
PRR Score
Hybrid
Shape
EVA
Core
Even
Balance
Performance
Every metric, scored out of 100.
Overall it sits in the top 11% of 1,000 rackets we’ve tested — its power score ranks in the top 14%.
Power
Very High86
Control
High75
Maneuverability
High70
Sweet Spot
Good66
Comfort
Good67
Value
High74
Owner feedback
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Power
Control
Maneuverability
Comfort
Sweet Spot
Value
PRR Score
87PRR Score
Inside the frame
What's inside
◉
CoreEVA
Foam core determines feel and vibration damping.
▽
ShapeHybrid
Head shape affects sweet spot size and balance.
⊡
BalanceEven-balance
Balance point determines power vs. control trade-off.
◎
LevelAdvanced
Target player level for this racket.
Scores from around the web
PadelReference
78/100
Padeful
85/100
Our verdict
The ST4 iteration of the Stupa Pro sharpened the recipe: same even-balanced hybrid intent, same punchy EVA core, with a strike that feels a touch more immediate than the ST3 it replaced. Power 86 converts pressure into finished points, control 75 keeps heavy drives in the court, and the demands stay familiar: comfort 67, tolerance 66, and a preference for players who commit to the shot. Weight documentation for this build is incomplete, so check the specimen in hand. Value 74 reflects fair run-out pricing. A convincing middle chapter in the Stupa line, best suited to aggressive all-courters.
The SIUX Electra is built around a specific kind of game. Franco "Stupa" Stupaczuk plays at full intensity at the net, finishes points overhead, and is never out of a rally through the glass. SIUX designed the Electra to match that: a hybrid shape that sits between a control-first round and a pure power diamond, loading up genuine finishing pace while keeping a face soft enough to play touch padel. That balance is harder to achieve than most brands admit, and the Electra has been one of the few rackets in our database to genuinely hold both ends of it.
We have tracked the line across three generations. The 2023 ST2 Pro scored 85 with us and set the Electra template: fast through the air, composed under pressure, with a face that let you redirect a vibora or place a clean bandeja without needing to think twice. The 2024 ST3 arrived with a stiffer hitting surface and better stability when opponents loaded pace at you; the ST3 Stupa scored 87, with Lite editions widening the family to lighter swing weights for improvers. The current ST5 Pro editions, Fire Red and Shadow Stupa, both score 91, the highest result SIUX has achieved in our database.
Each generation follows the same structure: a Stupa Pro edition at the top, designed for attacking players who want to smash overhead and still play a composed bajada off the back wall, with Lite and Go trims below for players building toward that kind of game. The ST generation number is the real thread through the range, and what the Electra has consistently rewarded is a particular construction of points: build through the glass, close at the net, finish overhead.
Which one should you buy?
Go straight to an Electra ST5 Pro edition if your budget allows. Both the Fire Red and the Shadow Stupa score 91 with us, and there is no meaningful performance difference between the two colourways. This is the most complete version of the Electra we have tested: it finishes points overhead with authority, stays composed under pressure in the back-court, and gives you enough feel at the net to play a proper bandeja when the rally demands placement over pace. If you find ST3 Stupa stock at clearance, a PRR 87 result is hard to argue with at a sharp enough discount. It remains a clean, capable racket and the gap to the ST5 barely registers on court when the price is right.
The Lite and Go editions are not lesser Electras so much as a different racket in character. Less swing weight, a softer overall response, better suited to players still developing consistency than to attacking players looking to load genuine finishing pace. They are honest options at the right price, but if you are after the full Electra experience, a Pro edition is the one to buy.
The generation that sharpened the recipe: the same even-balanced hybrid intent with a punchier, more immediate response, dependable drive control, and signature pedigree now at last-generation pricing. Our weight data for it is incomplete, so check the specimen in hand; the hit is firm with modest forgiveness, and the newer version supersedes it if you want the current feel.
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