Butterfly Tenergy 05 FX vs Nittaku Fastarc S-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Tenergy 05 FXNittaku Fastarc S-1
Our rating8.4/107.9/10
best_sidebackhandforehand or backhand
control1070
speed1397
spin11.596
sponge_hardness36 degrees (soft)35 degrees
typeInverted / High-Tension tensor (Spring Sponge)inverted
weight_uncut_g64around 41-43g

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Butterfly Tenergy 05 FX is optimized for backhand with soft sponge, dwell time, and premium spin. Nittaku Fastarc S-1 is a lightweight under 43g, speed-forward, accessible all-round tensor with strong value.

Tenergy 05 FX suits advanced backhand players seeking control and spin without pace. Fastarc S-1 targets intermediate attackers who value lightweight swing speed and accessibility across both wings.

FAQ

Which is lighter?

Fastarc S-1 is extremely light at around 41-43g uncut. Tenergy 05 FX is 64g, significantly heavier.

Which is better for backhand?

Tenergy 05 FX is backhand-optimized with exceptional control. Fastarc S-1 is all-round and works both wings.

Which spins more?

Tenergy 05 FX spin output is superior due to premium topsheet. Fastarc S-1 spin is notably lower, speed-focused.

Are they beginner-friendly?

Fastarc S-1 is far more accessible with forgiving touch and stable blocking. Tenergy 05 FX is advanced.

Which is more durable?

Both are solid. Tenergy 05 FX consistency is exceptional. Fastarc S-1 requires careful maintenance.