Butterfly Tenergy 80 vs Yasaka Rakza 7 Soft: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Tenergy 80Yasaka Rakza 7 Soft
Our rating8.8/108.2/10
best_sidebothbackhand or both
controlmedium-high9+ (Yasaka scale)
speed13.5/1411 (Yasaka scale)
spin11.2/1214+ (Yasaka scale)
sponge_hardness36°40 degrees (37-42 ESN range)
typetensor inverted (Spring Sponge)tensor/inverted
weight_uncut_g67approximately 42-44g

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Tenergy 80 is a spring-sponge tensor built for speed and directness alongside spin and blocking excellence. Yasaka Rakza 7 Soft is a softer tensor prioritizing control, high spin, and forgiving dwell, positioned as an intermediate stepping stone or backhand specialist rubber.

Rakza 7 Soft is exceptional for control and consistently outperforms comparable tensors in user reviews. Its soft sponge works brilliantly with new poly balls and offers generous net clearance from high throw. However, it is notably slower and may become a ceiling for advanced attackers seeking explosive power. Tenergy 80 is faster, more spin-capable, and better supports mid-to-far-distance aggression. Choose Rakza 7 Soft for precision, placement, and forgiving technique development. Choose Tenergy 80 for offensive pace and advanced all-court play.

FAQ

Which rubber is softer?

Rakza 7 Soft at 40 degrees (37-42 ESN range) versus Tenergy 80 at 36 degrees.

How much slower is the Soft version?

Noticeably slower than Tenergy 80 and standard Rakza 7, limiting penetration from mid-far distance.

Is Rakza 7 Soft good for backhand?

Yes. It is excellent for backhand control and a recommended first tensor for developing players.

Which rubber is better for new poly balls?

Rakza 7 Soft. Its soft sponge is specifically praised for poly ball compatibility.

Which offers better value?

Rakza 7 Soft is great value relative to premium tensors in its performance tier.