Gamma

Shockbuster Vibration Dampener

$4.99
Shipping calculated at checkout.
Item # 9246
Color: BLACK
  • Easy Returns
  • 3.7+ Million Happy Customers
  • Fast Shipping

AGSKB

The original ”worm” shaped Gamma Shockbuster Vibration Dampener contacts all critical main strings and dampens out vibration with its patented Zorbicon-filled design.

1 per pack

Colors: Black | Blue | Light Blue | Purple | Light Pink | Yellow | White | IOrange

Product information

FREE SHIPPING ON ORDERS OVER $50 (before taxes)

  • Valid in the 48 Contiguous U.S. only. Limited time offer. Applies to In-Stock items.
  • Order must have an actual or dimensional weight of 7 pounds or less.
  • Offer not valid on oversized or heavy items (cases of balls, can of balls, demo racquets, etc.).
  • Not Valid on drop ship items like stringing machines and ball machines.
  • Orders do Not ship or deliver on Saturday, Sunday or select Holidays.
  • Most Orders placed by 3pm CST will be shipped that day.
  • Any original shipping fees are none refundable.

  • Customers will be contacted via email or telephone with order issues or shipping delays.
  • Please provide contact information where you can be reached quickly.
  • Not responsible for weather-related delays.

FREE RETURN SHIPPING WHEN $50+ ORDER VALUE MAINTAINED

  • Please CLICK HERE for information about returns.
From To   Standard Ground* 2Day Next Day
$0.00 $49.99 = $5.95 $15.95 $29.95
$50.00 $149.99 = Free $15.95 $34.95
$150.00 $199.99 = Free $19.95 $39.95
$200.00 $9,999.99 = Free $19.95 $39.95

Alaska, Hawaii, Puerto Rico, Guam, US Virgin Islands, APO Addresses

From To   USPS Priority*
$0.00 $99.99 = $19.95
$100.00 $199.99 = $39.95
$200.00 $9,999.99 = $49.95

Orders being shipped outside of the Contiguous US or APO addresses will ship by means of the United States Postal Service (USPS) and in some cases FedEx.

**Shipping via USPS Priority provides minimal tracking information and normally delivers within 5-7 business days.

*** Any shipping promotions offered by Tennis Express DOES NOT apply to shipments outside of the contiguous 48 states.

**** Excludes tennis balls, court equipment, stringing machines, ball machines and all oversized items.


Canada, Mexico, and other International Orders

At this time, Tennis Express only ships to the United States and all US Territories including Puerto Rico, US Virgin Islands, Guam and military bases.   Due to manufacturer restrictions, we are unable to ship to countries outside of the United States. 

Return Policy

Tennis Express believes in providing our customers with the best selection of tennis products and innovative game improvement gear. If the products are not to your liking, please take comfort in knowing you can return or exchange unused products within 30 days of the delivery date. Used or worn product is ineligible for a Refund. However, Tennis Express may issue a partial store credit for product returned in a used or worn condition. Credit is at the discretion of Tennis Express based on the amount of wear and use on the product. Store credits expire after 90 days.

How to Return

Submit a return request by visiting Return Portal.

1. Log in with your order number and email.
2. If your order has more than one item, select the items that you want to return.
3. Select the item condition and reason for return. Optionally add any comments.
4. Save and continue to return options.

Once your return request is approved, you'll receive an email with a label or QR code for your FedEx return label and shipping instructions. After the product is returned, you receive a refund.

To qualify for a FREE prepaid FedEx Ground return label:

* Your order must be over $50 (before tax and any shipping fees).
* After your return, the value of what you keep must still be over $50 (before tax and any shipping fees).
* Limit 1 free return label per order.
* Valid only for the continental United States.

Example: You place a $75 order and return a $30 item. Your remaining total is $45, which is under $50, so this order does NOT qualify for free return shipping.

If your order does not qualify for free return shipping, you can still use our return portal for a flat $6.95 fee, which will be deducted from your refund. Otherwise, you're responsible for shipping items back to us, so please hold onto your tracking information.

Please note:

* If you use one of our prepaid labels, you may drop the shipment off at any authorized FedEx or USPS Service Station.
* Refunds will be processed within 3-5 business days from the day we receive the return.
* Any original shipping fees are non-refundable.
* Any store credit issued will expire within 90 days.

QUESTIONS: If you have any questions about our return process, please contact us before shipping back your return: [email protected]

Apparel Returns and Exchanges

* Apparel must be unworn, unwashed, and unused with original tags attached.
* For safety concerns, we cannot accept used or washed clothing.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* Apparel items carry NO warranty from the manufacturer.

Shoe Returns and Exchanges

* Shoes must be in NEW and unworn condition with original product packaging.
* DO NOT use the original shoe box as the outer shipping box. This will ruin the product.
* Accessories must be unworn, unwashed, and unused with original tags attached.
* For shoe outsole warranty claims, please visit our Shoe Warranty page.

Final Sale Notice: All Clearance Shoes and Apparel are Final Sale and not eligible for returns or exchanges. 

Racquet and Paddle Returns and Exchanges

* Racquets or Paddles must be in NEW and unused condition with original plastic covering the handle intact.
* Make sure any racquets or paddles are protected to safely endure shipment.
* For racquets strung at Tennis Express, the cost of the string will not be refunded.
* All sales are final on the purchase of used racquets.
* For racquet warranty claims, please visit our Racquet Warranty webpage.

Drop Ship Returns

* Items shipped directly from the manufacturer must be returned to the manufacturer within 30 days of the original delivery date.
* You must request a Return Authorization (RA) from Tennis Express prior to shipping. Please email [email protected] with your return request.
* Drop shipped items must be in new and unused condition with original product packaging.
* Any restocking fees or return shipping costs will be paid for by the customer.

Damages and Issues

Please inspect your order upon reception and contact us immediately if the item is defective or damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.

Unfortunately, we cannot accept returns on gift cards.

Last Updated 05/07/26

Overall rating: 4.4615383 / 5 from 52 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["performance","cover","color","work","style","dampener","vibration","order","products","damper","shockbuster","absorbs","pain","racquet"].

Review highlights

Reviews

So glad I bought this!

"This dampener works really well, just make sure you hit the middle of the strings!"

Alan B. (5/5)

H

"H"

Jeff Y. (5/5)

Arrived on time and in

"Arrived on time and in excellent condition."

Mauricio N. (5/5)

Love it! would buy again!

"Love it! would buy again!"

Alan (5/5)

Have always enjoyed ordering from

"Have always enjoyed ordering from Tennis Express. Products are always shipped quickly, and customer service is always willing to help. Website is very user-friendly."

Jeffrey B. (5/5)

Best damper

"Ive used the Gamma Shockbuster dampers for over 10 years. They do the best job of any damper Ive tried to dampen the string bed."

Robert S. (5/5)

Good vibes

"This is my favorite dampener. Works great and comes in a nice array of colors. If I hit hard right on it, it tends to explode and send gel onto the court, but I think of it as fireworks for my great shot!"

Kathy C. (5/5)

Couldnt Be Happier

"I love these things. I find them a lot more manageable and easier to put on than Gamma Shockbuster II. Plus, I feel these actually do more to dampen than the conventional circle-ish dampeners. However I will note after play testing the same racquet with a conventional dampener then the Gamma Shockbuster, it felt to me as if the Shockbuster increased my stringbed tension just smidge, as well as dampen more. However, I couldnt be happier with the product!"

Jeremy A. (5/5)

Shockbuster Vibration Dampner

"The best dampener on the market!"

Kevin A. (5/5)

Decent but not perfect

"They work great however two majors flaws- the unhook themselves occasionally which I could live with but they also break after about 8 sets. . . . love their performance however- unmatched"

Ron C. (4/5)

Q&A