Butterfly Tenergy 80 vs Nittaku Fastarc S-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Tenergy 80Nittaku Fastarc S-1
Our rating8.8/107.9/10
best_sidebothforehand or backhand
controlmedium-high70
speed13.5/1497
spin11.2/1296
sponge_hardness36°35 degrees
typetensor inverted (Spring Sponge)inverted
weight_uncut_g67around 41-43g

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Tenergy 80 is a premium spring-sponge tensor offering balanced speed and spin across both wings. Fastarc S-1 is a genuinely lightweight tensor at under 43g uncut, trading spin output for accessibility and easy blocking, positioned as an all-rounder for intermediate development.

Tenergy 80 delivers class-leading spin and direct speed with elite blocking feel. The Fastarc S-1 is lighter, more accessible, and excellent for transitioning players, but its spin ceiling is noticeably lower than Tenergy 80 or its Fastarc G-1 sibling. If you want maximum versatility and spin, choose Tenergy 80. If you prioritize maneuverability and forgiving blocks, the lightweight S-1 is compelling.

FAQ

Which rubber is significantly lighter?

Fastarc S-1 at approximately 41-43g uncut is notably lighter than Tenergy 80 at 67g.

How much spin do I sacrifice with the S-1?

Noticeably less than Tenergy 80 or G-1. The S-1 favors pace and control over spin generation.

Which works on both wings?

Both, though Tenergy 80 is rated for both with better balance; S-1 works on both but is lighter overall.

Is the S-1 good for beginners moving up?

Yes. It is forgiving, lightweight, and offers genuine pace alongside reliable blocking.