Nittaku Fastarc S-1 vs Yasaka Rakza X: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Nittaku Fastarc S-1Yasaka Rakza X
Our rating7.9/108.4/10
best_sideforehand or backhandboth
control70medium-high
speed97high
spin96high
sponge_hardness35 degrees47.5 (medium-hard, roughly 45-50 degrees)
typeinvertedtensor inverted
weight_uncut_garound 41-43g69

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The Fastarc S-1 delivers genuine tensor speed in a remarkably lightweight package, making it ideal for players transitioning from beginner rubbers and seeking accessible pace with strong blocking and serve-return reliability. Its non-tacky topsheet provides pleasing tactile feedback, though spin output lags behind top-tier tensors.

The Rakza X counters with outstanding grip and spin generation, rewarding active strokes with a high, forgiving throw arc. At 69g uncut, it runs noticeably heavier and can add fatigue to the racket, but excels at short-game touch and loop exchanges. The Rakza X suits intermediate to advanced players who prioritize spin and control over raw speed and can tolerate extra weight.

Choose Fastarc S-1 for lightweight versatility on both wings. Choose Rakza X for grip-dependent spin work where weight is acceptable.

FAQ

Which is lighter?

Fastarc S-1 at 41-43g vs Rakza X at 69g. A significant 26g difference affects racket feel and arm fatigue.

Which generates more spin?

Rakza X produces higher spin output with its grippy, tacky topsheet. Fastarc S-1 requires good technique for side-spin variation.

Which is better for beginners?

Fastarc S-1 is more forgiving and accessible, though both suit intermediate attackers better than raw beginners.

Which handles backspin better?

Rakza X’s high throw angle and grip excel at lifting heavy backspin. Fastarc S-1 feels more limited against spin-heavy returns.