Nittaku Fastarc S-1 vs Yinhe Mercury II: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Nittaku Fastarc S-1Yinhe Mercury II
Our rating7.9/108.2/10
best_sideforehand or backhandboth
control70very high
speed97medium
spin96high
sponge_hardness35 degreesmedium to medium-soft (36-38 degrees Chinese scale)
typeinvertedtacky inverted (budget Chinese)
weight_uncut_garound 41-43g60

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Fastarc S-1 delivers tensor speed without excessive stiffness, accessible to intermediate players and transitioning beginners. Its 41-43g weight and grippy non-tacky topsheet enable strong blocking, serve returns, and medium-high throw arc for loop clearance. Spin output is moderate but usable.

Mercury II is an exceptional value tacky Chinese rubber around five dollars per sheet, offering high control and spin on serves, loops, and chops. The elastic, forgiving sponge suits beginners, defenders, and choppers more than attacking loopers. Its medium throw keeps passive shots low, and speed lags German tensors, but the genuine tacky grip kills slippage and builds confidence in short-game work.

Fastarc S-1 is for intermediate attackers seeking lightweight pace. Mercury II suits beginners, defenders, and budget-conscious players building first custom rackets.

FAQ

Why is Mercury II so cheap?

It is a budget-friendly Chinese rubber without premium sponge technology. The value is genuine for beginners and defenders.

Can advanced players use Mercury II?

Yes, but mainly for backhand defense or choppers. Its slower speed and forgiving dwell don’t suit aggressive forehand looping at high levels.

Which is faster?

Fastarc S-1 is considerably faster. Mercury II is medium speed and rewards active strokes but cannot match tensor pace.

Which is better for serve variation?

Mercury II’s tacky topsheet excels at spin variation on serves. Fastarc S-1 produces good spin but requires more refined technique.