Official Siux studio photography shown where available; otherwise a technical diagram drawn from the racket's verified specification.
In stock, Gold Coast. Order before the 1pm AEST cut-off for same-day dispatch.
The Siux Electra ST4 Pro is Siux's pro-tier frame with a teardrop head, which lifts the sweet spot above centre for more mass behind the ball without a diamond's narrow margin.
It is built for power: finishing at the net, and rewarding a player who already generates their own racket-head speed. The balance is medium. It suits a player who can find the middle of the racket every time and wants the frame to add something.
The core is EVA. The face is 12K carbon. The finish is matte + sand — the sanded texture adds bite on the ball for spin.
Stated weight is 355–375g. Manufacturer weights vary by around ten grams either way, on every brand. Catalogue hardness rating is 8/10.
Franco Stupaczuk's 2025 signature frame, now run-out priced across the market. Played by Franco Stupaczuk.
Specifications from the manufacturer, verified 2026-08-17. Manufacturer weights vary by around ±10g.
| Head shape | Teardrop |
| Weight (±10g) | 355–375g |
| Balance | Medium |
| Core | EVA |
| Face material | 12K carbon |
| Surface | Matte + sand |
| Player level | Advanced |
| Play style | Power |
| Played by | Franco Stupaczuk |
| Brand | Siux |
| Our code | APS-SI-0007 |
Specifications published by the manufacturer, verified 2026-08-17. Manufacturer weights vary by around ten grams either way across every brand.
