21K Sports Tennis Vibration Dampener- Set of 3-Tennis Shock Absorber for Strings- Best for Tennis Racket, Premium- Durable & Long-Lasting- Great for Tennis Players (Green)

Tennis racquet vibration dampeners don’t absorb a significant amount of energy. Primarily, their function is to modulate the typical aggravating tinny “ping” into the basso “pop” of a well-struck ball. The 21K Sports dampener design is utilitarian – not flashy or cute. It satisfies three important criteria:• It’s easily installed – however, it’s critical to ensure that the dampener’s upper slot completely snaps into the bottom set of cross strings.• It produces a satisfying solid pop when the ball strikes the sweet spot.• It stays securely on the racket and doesn’t fly off in the middle of a critical point.

Love these dampeners. I currently own two rackets. One is very old/heavy (Pro Kennex.....26 years old), the other is new but too light in weight for my liking (Solinco 285). Both rackets could benefit from the use of dampeners for different reasons. These dampeners from 21K Sports did the trick. I'm swinging with more confidence as I'm not anticipating the "doink" sound/vibration anymore. Installing can be tricky.....do the center strings first. After you get the first center string in place, twist the dampener so that it is almost vertical to get the second string in place. The other strings are not as difficult but don't be afraid to twist the dampener from horizontal towards vertical to get the strings in.

I've been using these dampeners for about 3-weeks now. They are fantastic. I use them on my Head Graphene Radical MP. They fit nicely on the bottom of the racket face outside of the last cross string. I also use one outside of the last cross string on the top of the racket face. USTA permits multiple devices so long as they are located inside the outside cross strings. The reason I use two is that this particular racket is dead or vibration prone near the top portion of the string bed. I used to use conventional dampeners but they would slide or come off. So far this has not happened with the 21Ksports ones. Note that the outermost portion may occasionally pop off the top string bed. It doesn't effect my play and I just periodically adjust the dampener at the top between points. I'm a 4.0 player and string my racket with 17G poly at 38 lbs. This string combination and tension with the 21Ksports dampeners works great. Very satisfied.

Amazing Customer Service and a Desire to Make Customers Happy!!I purchased this dampener after researching and wanting a "better" solution to racket vibration. My wife and I both have 'older model' Prince rackets and these dampeners didn't fit either of our rackets properly:Prince Airstick B1025Prince O3 SilverI suggest you contact the Mfg. to confirm whether these will fit your racket(s) if you are using a older model racket--8+ years old. Note: I did not do this prior to purchasing. Their customer service is excellent even after the ‘sale.’ This product looks great and appears to be well made—just not a ‘fit’ for us.

This is the best dampener I've used for 2 reasons:1) Previous round dampeners have flown off repeatedly. This one stays on, although occasionally one end will dislodge and I have to reinsert my racket string (hence the 4-star rating and not 5). Thankfully, that process only takes a couple of seconds vs. the full minute it might take me to find the round dampener and finagle it back into place.2) The actual dampening is markedly sounder than the round dampeners. My hits feel more solid and my arm doesn't hurt anymore, either.For reference, I play with a Yonex eZone XI 98 and place the dampener in the middle below the lowest cross string.

The vibration dampener works well and looks nice on the racquet, but the price is a little high for how well it works. Also, it'd be nice if they offered a single or double pack, since they force you to overspend and purchase a 3-pack even if you only use one or two racquets.

I have Wilson and Babolat tennis racquets and this dampener did not quite fit right with either of them.It was very difficult to install it as I had to force it into the strings and it doesn't keep my racquet strings in place straight once I finally somewhat awkwardly got it in place.Please note that the package includes 3 dampener along with a card which indicates that they would send you a free gift IF you leave a review on Amazon.com. I'm guessing many of the positive reviews on this dampener were really motivations to get free gift. tsk tsk.Very disappointed, especially due to the seller's tactic of offering free gift in exchange for the review...THE BOTTOM LINE:Stay away from product. You've been warned...

I really wanted this shock absorber to work well, but it did not mesh well with the string pattern on my Wilson racquet. I cut some of the notches so they would better fit. I noticed when using the racquet for the first time, that the shock absorber nicely did the job, but it kept moving around. I am going to try some tape to hold it better in place, to see if that remedies the slippage. The racquet felt good when playing with it on, if that helps in decision making.