Donnay X-Dual Silver 99

Speak to a Racquet Expert 1.800.799.9230

Ordering racquets: Select from the options below to customize your racquet. We string according to your specifications. Follow the instructions below for selecting a string and be sure to enter tension.

Note about custom hybrid stringing

*If the string you want is not in the menu, select "String not in this menu" and on the next page type the name of the string into the stringing instructions. The price of the string will be added to your order once processed.

Stringing information for Donnay X-Dual Silver 99 Racquet: Tension range 50 to 60 pounds, optimum 55 pounds.

A solid feeling and user-friendly racquet for stronger intermediate through advanced players. Offering useful power from the baseline in a maneuverable weight, this racquet is well suited to attacking styles of play as well as those who like to utilize lots of spin. Our TW testers found excellent bite from the 16x19 string pattern and easy racquet acceleration through the hitting zone. At 11.3 ounces strung, the X-Dual Core Silver 99 provides enough mass for heavy hitting, yet never feels unwieldy. At net the racquet feels solid, crisp and comfortable. Donnay's Dual Core construction features separate inner and outer cores with Xene Core technology. The result is a more powerful and crisper feeling response compared to its X-Series equivalent (X-Orange 99).

Strung Specifications

Head Size:
99 sq. in. / 638.71 sq. cm.
Length: 27in / 68.58cm
Strung Weight: 11.2oz / 317.51g
Balance: 4 pts HL
Swingweight: 313
Stiffness: 62
Beam Width: 16mm / 18mm / 18mm /
Composition: Graphite w/ inner and outer XeneCore
Power Level: Low
Stroke Style: Full
Swing Speed: Fast
Racquet Colors:
Black / Silver
Grip Type: Synthetic
String Pattern:
16 Mains / 19 Crosses
Mains skip: 7T, 9T, 7H, 9H
Two Pieces
No Shared Holes
String Tension: 50-60 pounds
Dual Core

The Dual-Core racquets have a second layer of Xenecore tubing on the inside of the hoop that futher fortifies the frame and eliminates the loss of energy on ball contact.


XeneCore is a new fiber technology that uses high-pressure solids to form and reinforce the graphite fiber composite to incredible levels of strength that has allowed Donnay designers to reduce the thickness of the racquet beam width to a dramatic 15 millimeters, the thinnest in tennis. The thin beams greatly reduce air resistance (the same reason that sleek sports cars outperform bulky SUVs in wind-tunnel tests) providing unparalleled levels of maneuverability. The high-tensile strength of XeneCore also dampens vibration and provides unexpected power, while reducing the "shadow effect" from the beam blocking a portion of the string bed on off-center hits resulting in "frame shots." The net result of XeneCore technology is a previously unachievable level of all-around performance.
Customized Weighting Technology System Kit

The Donnay customization kit that is sold separately allows users the option to adjust the weights and balances exactly to their liking to any Donnay racquet. There are three interchangeable buttcaps weighing two, seven and 12 grams, along with weighted slides that can be easily applied to the sides and top of the frame in the blink of a changeover. The combination of the slides and lightest buttcap tips the balance more to the head for more power; no slides and the heaviest buttcap increase control and further enhance maneuverability. There are 10 combinations in between.

Other Items to Consider

  • Wilson Pro Overgrip 12-pack $12.95

    Add a 12 pack of Wilson Pro Overgrips to your Racquet purchase for just $12.95. You Save $3.