Butterfly Sriver FX vs Yasaka Rakza 7 Soft: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Sriver FXYasaka Rakza 7 Soft
Our rating7.8/108.2/10
best_sidebothbackhand or both
controlhigh9+ (Yasaka scale)
speedmedium11 (Yasaka scale)
spinmedium-high14+ (Yasaka scale)
sponge_hardnesssoft40 degrees (37-42 ESN range)
typehigh-tension inverted (soft)tensor/inverted
weight_uncut_g62approximately 42-44g

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Both soft, both control-first, but Rakza 7 Soft (8.2 rating) is the modern upgrade. Sriver FX (7.8 rating) is the vintage option—soft, consistent, excellent for learning but lacks catapult and competitive spin. Rakza 7 Soft combines softness with higher throw angle, excellent brush activation, and spin production that rivals mid-tier tensors.

Sriver FX for beginners and budget players. Rakza 7 Soft for intermediate loopers wanting control-first play with modern performance and spin ceiling.

FAQ

Is Rakza 7 Soft worth upgrading to?

Yes. It delivers modern tensor performance in a soft, forgiving package. Excellent value upgrade.

Which blocks better?

Both block excellently. Rakza 7 Soft adds consistency through lower spin-sensitivity.

Can Sriver FX compete with Rakza 7 Soft spin?

No. Rakza 7 Soft’s tensor sponge far outspins the classic high-tension design.

Is Rakza 7 Soft good for backhand?

Excellent. Explicitly recommended for backhand control or all-round players.

Which requires less technique?

Sriver FX is softer and more forgiving. Rakza 7 Soft requires slightly more technique to unlock its potential.