Butterfly Tenergy 19 vs Nittaku Fastarc P-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Tenergy 19Nittaku Fastarc P-1
Our rating8.7/107.8/10
best_sideforehandforehand
controlhigh — extended dwell time provides greater margin for error than other Tenergy variants8.5
speed13215.5
spin11712.25
sponge_hardness36 degrees (approx 48 degrees ESN)47.5 degrees
typeinverted / pimples-in tensortensor
weight_uncut_gapprox 49 g70

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Tenergy 19 (8.7) maximizes spin and forgiveness through extended dwell time and thinner pimples. Its medium-high throw angle and extended contact time create the largest margin for error in premium tensors. Ideal for loopers seeking high spin output and reliable, forgiving feel.

Fastarc P-1 (7.8) is linear and demanding: it generates impressive spin on power loops despite soft in-play feel, but very weak strokes produce weak, error-prone results. Its high throw angle provides generous safety margin; soft feel masks firm sponge demands. Bounciness and lack of tacky grip make short game tricky.

Tenergy 19 suits loopers who value forgiveness and extended dwell. Fastarc P-1 suits advanced forehand loopers committed to full, technically sound topspin strokes.

FAQ

Which is more forgiving of tentative strokes?

Tenergy 19 tolerates various swing speeds and techniques. Fastarc P-1 is unforgiving: tentative strokes produce weak results.

How do throw angles differ and why matter?

Tenergy 19 is medium-high; Fastarc P-1 is high. Higher throw provides greater safety margin but requires different timing.

Which works on all-wood blades?

Fastarc P-1 suits both all-wood and carbon blades. Tenergy 19 requires carbon or ALC blades.

Which is more durable?

Fastarc P-1 is durable, high-quality German-made construction. Tenergy 19 shows wear over time but maintains playability.

Which handles heavy backspin better?

Fastarc P-1 requires greater precision. Tenergy 19’s extended dwell and lower spin sensitivity aid backspin return.