Butterfly Tenergy 64 vs Nittaku Fastarc G-1: Which Should You Buy?

UltraSpin comparison · 2026-06-07 · rubber

Butterfly Tenergy 64Nittaku Fastarc G-1
Our rating8.6/108.8/10
best_sideboth wings, but especially the backhand and for speed-first attackersboth
controlmedium-highmedium-high
speedvery high15.0 (Nittaku)
spinhigh but the lowest of the Tenergy line12.5 (Nittaku)
sponge_hardnessapproximately 36 degrees on the Butterfly scale (around 48 degrees ESN, plays nearer 45)47.5°
typespring sponge high tension tensor, inverted topsheettensor inverted
weight_uncut_gapproximately 70 (around 47 g cut at 2.1 mm)69

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Both are premium all-court attacking tensors, but they reward different strokes. Tenergy 64 is the fastest Tenergy, spin-insensitive and superb for blocking and countering close to the table, with a lighter cut weight than many rivals. Its low throw and unforgiving passive receive ask for an angle adjustment.

Fastarc G-1 leans on a high, safe throw that makes opening loops against backspin consistent and forgiving, pairing heavy spin with real speed. Its firm 47.5-degree sponge rewards a committed, technically sound stroke, and it slightly edges out its rival on rating while costing less than Tenergy.

Choose Tenergy 64 for flat, direct hitting and easy blocks, especially on the backhand. Choose Fastarc G-1 if you are an intermediate-to-advanced looper who wants a forgiving high arc, heavy spin and Tenergy-class durability at a lower price.

FAQ

Which rubber is more forgiving on opening loops?

The Nittaku Fastarc G-1. Its high, safe throw makes opening against backspin consistent, whereas Tenergy 64 has a lower throw that needs an angle adjustment.

Is the Fastarc G-1 cheaper than Tenergy 64?

Yes. The Fastarc G-1 delivers Tenergy-class performance and durability at a lower cost, which is one of its main draws.

Which is better for blocking?

Tenergy 64 has the edge for blocking thanks to its spin-insensitive feel and reliable active blocks close to the table.