Butterfly Sriver FX vs Nittaku Fastarc P-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly Sriver FXNittaku Fastarc P-1
Our rating7.8/107.8/10
best_sidebothforehand
controlhigh8.5
speedmedium15.5
spinmedium-high12.25
sponge_hardnesssoft47.5 degrees
typehigh-tension inverted (soft)tensor
weight_uncut_g6270

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Both rated 7.8 but incomparable in intent. Sriver FX is the safety net—soft, consistent, excellent for control and blocking. Fastarc P-1 is the high-arc specialist: impressive spin on power loops, high throw angle for safety margin, but very linear and demanding. Tentative strokes produce weak results.

Sriver FX for beginners learning fundamentals. Fastarc P-1 for advanced forehand loopers committed to technically sound, full-body topspin strikes.

FAQ

Can both suit intermediate players?

Sriver FX, easily. Fastarc P-1 is too demanding for most intermediates; it rewards only advanced technique.

Which generates more spin?

P-1 on power loops. Sriver FX on soft play. They suit different stroke emphases.

Is P-1 really for German-made quality?

Yes. High-quality construction, but performance demands make it unsuitable for most players.

Which blocks better?

Sriver FX excels at blocking with soft, forgiving returns. P-1 blocks well but is unforgiving of poor contact.

Best first tensor for upgrading?

Not P-1. Start with Sriver FX to build fundamentals, upgrade to balanced tensors before attempting P-1.