Photo: extreme-tennis.eu
Siux Electra Pro ST4 Stupa
Siux · 2025 · Electra
Siux Electra Pro ST4 Stupa pairs a low swingweight that feels light and easy to whip around, a teardrop head that splits the difference between power and control and firm foam for a direct response and a low trampoline.
Measurements
The headline figures used in the comparison, with where each sits across the indexed rackets.
Measurements by source
Every reading is kept with its source and confidence. Conflicting readings are listed side by side rather than averaged.
| Source | Confidence | SW | TW | Bal | Scr | RA |
|---|---|---|---|---|---|---|
| LabExtreme Tennis X-Compare / Siux official | High | 169 | 17 | 26.7 | 62 | 84 |
| ImageProduct image (silhouette inspection)shape Teardrop | Medium |
Values are shown in each source's native scale (X-Compare, official or TWU). A blank cell means that source did not report that metric.
Closest alternatives
The rackets most similar to this one, using it as the reference.
Wilson Bela Pro V3Close on swingweight, balance and twistweight, the same head shape and similar foam.
Very close99
Wilson Defy V1Close on swingweight, balance and twistweight and the same head shape.
Very close90
Wilson Defy SE V1Close on swingweight, balance and twistweight and the same head shape.
Very close90
Osaka Vision Pro Power 2026Close on swingweight, balance and twistweight and the same head shape.
Very close89
NOX Future Hybrid 12K AlumClose on swingweight, balance and twistweight and the same head shape.
Very close88
Siux Electra Pro Stupa 2026 BlackClose on balance, twistweight and face stiffness, the same head shape and similar foam.
Very close88