Nittaku Fastarc G-1 vs Yasaka Rakza Z: Which Should You Buy?

UltraSpin comparison · 2026-06-07 · rubber

Nittaku Fastarc G-1Yasaka Rakza Z
Our rating8.8/108.6/10
best_sidebothforehand
controlmedium-highhigh
speed15.0 (Nittaku)medium
spin12.5 (Nittaku)extreme
sponge_hardness47.5°50 degrees (medium-hard; Extra Hard version around 57 degrees)
typetensor invertedhybrid tacky tensor
weight_uncut_g6972

We may earn a commission from links on this page. Learn more.

Two high-end attacking rubbers with different personalities. The Fastarc G-1 is a balanced tensor that pairs heavy spin with real speed and a high, safe throw, making opening loops against backspin forgiving on either wing, with Tenergy-class durability at a lower cost. The Rakza Z is a tacky hybrid built around extreme spin and a strong linear kick, with surprising control and dwell for a hard rubber.

The split comes down to versatility versus spin specialism. The Fastarc G-1 works on both forehand and backhand and gives you speed without a full swing. The Rakza Z is a forehand rubber that goes weak and slow at less than full power, is heavier at 72 grams and can fatigue the arm, and needs a closed blade angle for its high throw.

Choose the Fastarc G-1 if you want one rubber that does everything at pace, especially across both wings, with long-lasting performance. Choose the Rakza Z if you are a proactive forehand looper who always swings fully and wants maximum spin pressure, or you want a cheaper tacky alternative to Dignics 09C.

FAQ

Which is better for both forehand and backhand?

The Fastarc G-1. It is a proven all-court rubber for either wing, while the Rakza Z is best kept to the forehand where you can commit to full strokes.

Which spins the ball more?

The Rakza Z is rated extreme spin with its tacky topsheet, edging the Fastarc G-1, though the Nittaku still delivers heavy spin alongside more outright speed.

Is either easier to use without a full swing?

The Fastarc G-1. It produces speed and a safe arc more readily, whereas the Rakza Z turns weak and slow if you do not commit to a full stroke.