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

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Tenergy 05 HardNittaku Fastarc S-1
Our rating8.5/107.9/10
best_sideforehandforehand or backhand
control5.570
speed13.097
spin11.596
sponge_hardness43 degrees (hard)35 degrees
typetensorinverted
weight_uncut_g71around 41-43g

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Butterfly Tenergy 05 Hard is an extremely fast, low-arc, demanding tensor for elite forehand attackers on carbon. Nittaku Fastarc S-1 is a lightweight under 43g, speed-forward, accessible all-round tensor with strong value.

Tenergy 05 Hard suits elite forehand specialists on carbon composites. Fastarc S-1 targets intermediate attackers seeking lightweight swing speed and accessibility.

FAQ

Which is lighter?

Fastarc S-1 is extremely light at around 41-43g. Tenergy 05 Hard is 71g, much heavier.

Which is more forgiving?

Fastarc S-1 is far more forgiving with stable blocking. Tenergy 05 Hard is unforgiving of weak strokes.

Which is faster?

Tenergy 05 Hard is extremely fast. Fastarc S-1 is speed-forward but less extreme.

Can either work on both wings?

Tenergy 05 Hard is forehand-only. Fastarc S-1 is all-round and works both wings.

Which is better for beginners?

Fastarc S-1 is far more accessible. Tenergy 05 Hard is elite-level and unforgiving.