Siux Electra ST3 Stupa Pro Padel Racket

Siux changed the name more than the racket. The ST3 (2024), the ST4 (2025) and the Electra Pro (2026) all carry a 15K carbon face over a hard EVA core in a teardrop of 350 to 375 g, and Padelful scores them in the same range. The ST3 gets 9.4 for control against 9.1 for the 2026 Shadow Red, and the newer racket gets 9.0 for manoeuvrability against 8.6.

In practice that means the ST3 is a very good racket that is two seasons old. If you can find one at a good price, you are not buying a worse racket; if you want the current colours and a slightly quicker head, the Electra Pro is the one we list as current, in Fire Red and Shadow Red.

Padelful's reviewer praised pinpoint accuracy, strong power with the balance leaning towards the head, good manoeuvrability despite the power, and a forgiving sweet spot, with Siux's Dual Pro Grip dampeners taking some vibration out of the handle. The page lists no weaknesses, and its lowest score is rebound at 7.8.

Read that as a firm racket that does not hand you free pace. You hit through the ball, and the face tells you exactly what you did. It is designed for competitive players, and it will frustrate someone who wants the racket to do some of the work.

A note on sources. Padelful calls the shape a teardrop, and Padel Nuestro describes a hybrid design with a medium balance. Siux's own sheet for the ST3 was not available to us, so we give ranges and say where they come from.

Siux numbered its Electra generations until 2025 and moved to years in 2026, so the same family appears under several names. The ST3 Stupa Pro (2024) is this racket, the ST4 is the 2025 edition, and the 2026 racket is simply the Electra Pro. There is also an ST3 Go, the softer, more forgiving version of the same line, which suits intermediates who want a bigger sweet spot better than this Pro.

If you are matching a name from a club-mate, the numbers will tell you the season, and the Siux padel rackets page walks through the whole range.

Anyone who wants a gentle racket. A hard core and a firm face do not forgive late contact, and the best padel racket for intermediate players page has softer options for players still building consistency. If it is raw power you want, the Fenix Pro goes further.

A firm racket deserves a fresh grip. A cushioned replacement or a tacky overgrip such as the Head Pro overgrip is the usual choice, and our padel grips page explains the difference. Frame tape from the racket protector range is worth fitting before the first match.

Lively balls help a hard racket, so a tube of Bullpadel Next balls is a sensible partner, and the padel balls page explains how fast pressure fades. The padel bags page has bags with a thermal pocket, and court shoes are on our padel shoes page.

To weigh it against other brands, the advanced padel rackets list and the full padel racket range are the places to look, and our guide to choosing a padel racket explains shape and balance.