The Siux Fenix Go 4 suits intermediate players—particularly male players—who want more teeth in attack without giving up everyday playability. If you’re improving your attacking technique and need a racket that helps produce depth and speed on overheads and volleys, this is a logical step up from softer beginner frames.

It’s also a good option for players who value maneuverability in transition: the weight window and balance keep the racket lively enough at the net while still offering enough head weight to finish points from the red.

Power is the Fenix Go 4’s headline trait. The teardrop shape and medium-high balance bias mass toward offensive strikes, so smashes and aggressive volleys come through with authority compared with neutral-shaped rackets.

With an expert rating of 8 and a versatile game tag, the model supports aggressive point construction without forcing an all-out power game—players can still pepper slices and control-oriented shots when the rally demands it.

Control isn’t sacrificed entirely for power: the medium-high balance and the 355–375 g weight range give the Siux Fenix Go 4 a stable feel at impact and enough maneuverability for quick net exchanges. It’s easier to reposition than heavier, extreme-balance rackets, which helps in doubles when reaction speed matters.

Expect decent racket speed through preparation and quick defensive blocks, though the slightly firmer setup rewards committed swings more than soft touch placements.

The Fenix Go 4 uses 3K carbon fiber faces paired with a medium-hard EVA core and a smooth surface finish. Those 3K carbon planes are narrower and denser than lower-count weaves, contributing to a crisp, responsive face.

The medium-hard EVA core favors energy return and sharper rebounds rather than a plush, damped feel—this is part of what helps the racket deliver stronger impact power.

• Face material: 3K Carbon fiber
• Core: EVA Hard
• Surface: Smooth
• Hardness: Medium-Hard
• Weight range: 355g - 375g
• Balance: Medium-High
• Shape: Teardrop
• Level: Intermediate

On court the Siux Fenix Go 4 feels firm and decisive. Impacts are crisp with a direct transfer of energy, which players will notice on overheads and drive shots—the ball pops off the face with less dwell than softer rackets.

That firmer response rewards compact technique and timing; players who swing with confidence will extract the most power. In defensive or touch situations the racket feels less forgiving, so adjustments to stroke softness are helpful.

The main tradeoff is the firmer impact feel: the medium-hard EVA and smooth 3K carbon faces produce strong feedback and power but reduce shock absorption compared with softer cores. Players sensitive to vibration or who prefer a very plush feel may find it taxing over long sessions.

Also note the medium-high balance pushes weight toward offensive strikes; that increases hitting power but can be slightly more demanding on the wrist in extended net play. The 355–375 g window helps mitigate this, but choose your weight carefully within that range.