Siux Electra Pro 26 - Technical Review
The Electra Pro is Franco Stupaczuk’s racket and occupies an interesting position within the 2026 Siux line—stiffer than the all-around models and less extreme than the Fenix Pro. On paper, that’s the classic middle ground where many rackets fall short, because they ultimately don’t excel at either. That doesn’t happen here, and the reason is the combination of a stiff core with a shape that tempers it. The short conclusion up front: this is an offensive racket with a moderate teardrop shape that helps you keep the rally going.
What the scale says
A tested unit weighed in at 370 grams out of the box, with a balance point of 26.5 centimeters. The manufacturer’s spec is 355 to 375 grams, so this unit is at the upper end of the range. Siux actually delivers that entire range, so the one you get might be twenty grams lighter than what was weighed here.
That makes comparisons with other rackets less reliable than they seem. With a 20-gram variation within the same model name, the difference between two Electra Pros is greater than the difference between an Electra Pro and the next model up or down. If you read somewhere that this racket is surprisingly maneuverable for the power it delivers, that’s probably true for that particular racket. When purchasing in a store, ask about the weight, or weigh it yourself. And you can always make adjustments later, because the ShockOut dampeners offer an easy way to fine-tune the weight and balance.
The Core: Hard EVA
The Electra Pro has a hard EVA core, and that core determines the character of this racket more than its shape. A hard core deforms less upon impact, so the ball stays on the face for a shorter time. This results in a crisp, direct response and a fast ball release as soon as you generate speed. The downside stems from this same characteristic: what deforms little also gives back little, so with a passive or rushed stroke, you get back exactly what you put into it.
The blade, and why the number of Ks means less than the box suggests
The blade is made of 12K carbon. That K number simply indicates how many thousand filaments are in a bundle—and nothing else. How stiff the laminate ultimately becomes depends on the weave direction, the number of layers, the resin ratio, and how the blade is constructed onto the frame. As a result, a 3K blade can turn out to be stiffer than a 15K blade, and within the same construction, it can be the other way around. The number does not predict the direction.
What you can determine is what you feel, and in this case, it’s a stiff, unyielding blade that reinforces the core’s hardness rather than compensating for it.
Blade Shape and Balance Point
The Electra Pro has a teardrop shape that is slightly rounded at the head. As a result, the sweet spot is higher than with a round head shape, but significantly lower than with a diamond shape. In practice, you get a contact zone that sits slightly above the center of the head and extends downward quite a bit. That explains why this racket performs better in rallies than its core would suggest.
At 26.5 centimeters and 370 grams, however, you shouldn’t treat this as a mid-balance racket anymore. On paper, 26.5 centimeters is in the middle of the scale, but that scale is based on a racket weighing around 360 grams. Ten extra grams, distributed across the same head, increase the swing weight without shifting the balance point even a millimeter. That’s exactly why you should always consider balance point and weight together.
Tuning with ShockOut dampeners
Siux no longer ships its rackets from the factory with ShockOut dampeners in the head. That’s a shame, because these are the rubber caps you press into the holes in the face, and they’re available separately. They serve two purposes at once. The first is damping; they absorb some of the vibration from the head, which reduces strain on your arm. The second is adjustment, and this feature is underutilized. At 0.9 grams each, a single damper barely affects your total weight, but it’s not really about the weight. It’s about where that weight is located. Mass placed high up in the blade is farther from your wrist, and its contribution to the swing weight increases with the square of that distance. So half a gram at the top counts for more in the swing than the same half gram just above the centerline.