Nittaku Fastarc G-1 vs Nittaku Fastarc S-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Nittaku Fastarc G-1Nittaku Fastarc S-1
Our rating8.8/107.9/10
best_sidebothforehand or backhand
controlmedium-high70
speed15.0 (Nittaku)97
spin12.5 (Nittaku)96
sponge_hardness47.5°35 degrees
typetensor invertedinverted
weight_uncut_g69around 41-43g

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Nittaku Fastarc G-1 delivers heavy spin and real speed together with a forgiving high arc and Tenergy-class durability. Its 47.5-degree sponge and proven popularity suit intermediate to advanced attackers on either wing. G-1 is the benchmark heavy-spin tensor at competitive cost.

Nittaku Fastarc S-1 is a lightweight (under 43g), speed-oriented tensor with softer sponge and non-tacky, grippy topsheet. Its medium-high throw angle and accessible character suit intermediate all-rounders transitioning from beginner rubbers. S-1 generates noticeably less spin than G-1 but offers genuine pace and control.

FAQ

Which is heavier?

G-1 at 69g uncut is significantly heavier than S-1 at approximately 41-43g. Full racket weight depends on blade and rubber.

Which generates more spin?

G-1 (12.5 Nittaku scale) far exceeds S-1 (96 Xiom scale). G-1 is for spin specialists; S-1 is for speed-oriented attackers.

Which suits beginners?

S-1. Its lightweight, accessible character supports developing all-round players. G-1 requires intermediate-to-advanced technique.

Can I use G-1 on the backhand?

Yes, G-1 is versatile for both wings. S-1 is also suitable for both sides but less specialized.

Which lasts longer?

G-1 has proven Tenergy-class durability. S-1 is also durable for a tensor but less historically proven.