Low frequencies tire
the arm.
Frame Stabilizer absorbs them.
The pendulum design intercepts the deep vibrations of the frame. Hard to perceive, but heavy on the arm.
Over a few sessions, you will notice it: in the day-after, the arm feels lighter.
Discover how it works What you’ll feel on court
Low frequencies tire
the arm.
Frame Stabilizer absorbs them.
The pendulum design intercepts the deep vibrations of the frame. Hard to perceive, but heavy on the arm.
Over a few sessions, you will notice it: in the day-after, the arm feels lighter.
On court.
You hit, the pendulum activates, the racquet calms. Your arm becomes lighter.
Strategic position
Vibrations gather in the throat of the frame. The pendulum quiets them before they reach your arm.
Counterphase response
The pendulum reacts to the frame’s motion. Its opposite oscillation reduces the amplitude of low frequencies.
Patented design
A pendulum mass damper inspired by Taipei 101: the mass moves in counterphase and opposes vibration.
Not all vibrations carry the same weight.
Mid and high frequencies shape sound and character. Low frequencies tire the arm. Frame Stabilizer targets these.
The pendulum softens deep vibrations and makes the racquet feel more stable. But the clearest difference appears at the end of your session.
Lightness in the response, and in the weight.
| Feature | Frame Stabilizer | Silicone Frame Dampeners (e.g. Fluendo Doctor) |
| Technology | Dynamic pendulum: active counterphase response | Silicone: passive mass damping |
| Low-frequency intervention | ✔︎ Yes | ✔︎ Yes |
| Added weight | 1.1–2.2 g depending on setup. Minimal impact | ~14 g. Significant mass. |
| Placement on frame |
High throat. Closer to the source of stringbed vibrations, where energy is stronger. | Low throat, near the handle: vibrations already partly dispersed |
Dynamic response |
✔︎ The Pendulum modulates deep vibration amplitude | ✖︎ Static Uniform damping that doesn’t modulate vibration |
On-court feel | ✔︎ Cleaner impact, freer frame | ➖ Muted feel, less clarity |
Lightness in the response, and in the weight.
| Feature | Frame Stabilizer | Silicone frame dampeners (e.g. Fluendo Doctor) |
| Technology | Dynamic pendulum: active counterphase response + metamaterial extra damp effect | Silicone: passive material damping. Mass-related (more mass > more damp) |
| Low-frequency intervention | ✔︎ Yes | ✔︎ Yes |
| Added weight | Starts as light as 1.1 g. Minimal weight impact (0.3%-0.5%)- | ~14 g. Significant added mass (5-6%). |
| Placement on frame |
High throat. Closer to the source of impact, where vibrational energy is stronger. |
Low throat. Closer to the handle, where vibrations get partly dispersed. |
Dynamic response |
✔︎ Pendulum modulates deep vibration amplitude | ✖︎ Static, uniform damping that doesn’t modulate vibration |
On-court feel | ✔︎ Cleaner impact, freer frame | ➖ Muted feel, less clarity |
PATENTED
TECHNOLOGY
Frame Stabilizer brings to tennis a proven damping principle: the pendulum dynamics used to stabilize structures like Taipei 101.
AMbelievable™ brings this widespread concept to a next level through 3D printed metamaterials, building a system that modulates deep frame vibrations.
Its' physics serving the player. It's matter made programmable.
PATENTED
TECHNOLOGY
Frame Stabilizer brings to tennis a proven antivibration principle: the pendulum dynamics used to stabilize structures like Taipei 101.
AMbelievable™ recreates it through 3D printing and metamaterials, building a system that modulates deep frame vibrations.
Not magic. Matter, made programmable.
The difference, told.
The first thing I noticed was how light my arm felt.
After two hours of training, no usual soreness.
I was worried something in that spot would over-dampen or change the balance.
It doesn’t. The shot stays full, and the weight is invisible.
That small post-match discomfort? Gone.
The racquet feels steadier, but the arm is what really changes
I use stiff racquets and my arm often gets tired.
With this, I absorb less shock. More comfort. More ease.
Choose your color
l,k
No. The weight is minimal: 1.1 g per unit — too little to alter your swing.
It must be installed during stringing, by your trusted stringer.
You’ll receive complete instructions right after purchase.
Absolutely. At any restring you can remove the whole unit, or remove only the pendulum cap and leave the core in place.
It’s not the product’s primary purpose, but leaving only the core installed can feel slightly fuller at impact for some players compared with having nothing installed.
You can also move it to another racquet when you restring.
Risk-free trial.
Try it on court if it doesn’t convince you, returns are simple, fast and fully refunded.
We’re tennis players too: we want you to feel the difference, not feel constrained.
Just a heads-up: this product is best judged after play and the next day, so we ask that you test it for few weeks to truly understand its behavior.
If not, call or message us on WhatsApp, we’re always here to help.
Details that matter.
If something’s not clear yet, it’s here.