Category Archives: PEEK
Head Auxetic 2 Radical Team 2025
By now, you have probably seen the latest Radical series, which is very hard to miss. If you haven’t seen them yet, here is a peek at the “orangiest” of all racquets! These racquets look great and are perfectly matched to the Radical branding.
This review is of the Head Auxetic 2 Radical Team 2025, the lightest of the series with a 102-square-inch head.
When examining the following specifications, pay attention to the racquet’s stiffness. This flex may mitigate power but will open up a great combination for a player looking to take more control of the game.
The string we chose for this racquet is Ashaway Dynamite Natural 17 gauge (the color is a bright green, not natural). The material is PEEK fibers with a rough braided outer jacket, presenting a lovely COF if you care about these things.
The Radical has always been a great performance racquet, and this 2025 series is no exception. Come by the World Headquarters, get a demo, and tell us what you think.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Auxetic 2 Radical Team 2025 |
| Reference Tension | 56 |
| String | Dynamite PEEK Multi |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 45 |
| String Bed Stiffness -FlexFour | 57.7 |
| Strig Bed Stiffness - SBS | 34.0 |
| String Bed Stiffness - ERT | 32 |
| Racquet Flex, RDC | 60 |
| Racquet Flex, FlexFour | 34 |
| Racquet - In Plane Stiffness | 421.8 |
| Weight, Grams | 301 |
| Weight, Ounces | 10.62 |
| Balance, mm | 330 |
| Balance, Inch | 12.99 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.83 |
| Head Length | 13.12 |
| Head Area, cm2 | 653.2 |
| Head Area, Sq. Inch | 101.3 |
| Beam Height @ Grip, mm | 22.5 |
| Beam Height @ Mid, mm | 24.7 |
| Beam Height @ Tip | 22.8 |
| Beam Width @ Grip, mm | 12./6 |
| Beam Width @ Throat, mm | 12.5 |
| Beam Width @ Mid, mm | 12.6 |
| Beam Width @ Tip, mm | 12.8 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .631 |
| Main String Grid Inch/mm | 7.25/184.2 |
| Cross String Grid Inch/mm | 9.69/246.1 |
| Density (% of head filled with string) | .671 |
| Average Cross String Space | .493 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 32 |
| Dynamic Tension, Lbs/in | 178.9 |
| First Moment, Nm | .768 |
| Polar Moment | 316 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 300 |
| Swing Weight, Ounces | 10.58 |
| Swing Weight Calculated | 327.8 |
| Power, RDC | 43 |
| Control, RDC | 57 |
| Manueverability, RDC | 87 |
| Power, Calculated | 1840.7 |
| Head Points | 4.09 |
| Head Weight, % | 48.1% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 6.98 |
| Efective Stiffness - lbs | 25.7 |
| K, Lb/In | 144.2 |
| Recoil Weight | 142.9 |
| Twist Weight | 217.2 |
| End Weight | 116.3 |
| Tip Weight | 183.8 |
| 9 O'Clock | 85.4 |
| 3 O'Clock | 86.2 |
| Butt End | 128.8 |
| COF, Main | .494 |
| COF, Cross | .388 |
The GSW Women’s Tennis Team
The women of GSW tennis jumped off to a great start by winning the home opener!
Congratulations to Madeline, her teammates, and Coach Coach Karlie Levering for leading the team!
We have been working with Madeline’s racquets (Wilson Blade with Ashaway MonoGut ZX string) for several years and are happy to continue supporting Madeline and her team!
A Long Head Gravity Tour 98
As a high performance racquet technologies business, we have requests for everything imaginable, some not so imaginable! Long racquets are at the top of the list.
Here is a review of a Head Gravity Tour 98 2025 SMU that is 27.75 inches long/70.485cm. See if you can determine which property is most affected by the length.
You can see the string properties here as data taken on our Questron.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity Tour 98 2025 SMU |
| Reference Tension | 57 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 52 |
| String Bed Stiffness -FlexFour | 61.0 |
| Strig Bed Stiffness - SBS | 50.6 |
| String Bed Stiffness - ERT | 37 |
| Racquet Flex, RDC | 58 |
| Racquet Flex, FlexFour | 43 |
| Racquet - In Plane Stiffness | 429.5 |
| Weight, Grams | 335 |
| Weight, Ounces | 11.82 |
| Balance, mm | 331 |
| Balance, Inch | 13.03 |
| Length, Cm | 70.5 |
| Length, Inch | 27.756 |
| Head Width | 9.86 |
| Head Length | 12.71 |
| Head Area, cm2 | 633.6 |
| Head Area, Sq. Inch | 98.2 |
| Beam Height @ Grip, mm | 21.3 |
| Beam Height @ Mid, mm | 21 |
| Beam Height @ Tip | 21.5 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.6 |
| Beam Width @ Mid, mm | 10.8 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .650 |
| Main String Grid Inch/mm | 7.72/196.1 |
| Cross String Grid Inch/mm | 10.25/260.4 |
| Density (% of head filled with string) | .785 |
| Average Cross String Space | .546 |
| Average Main String Space | .464 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .858 |
| Polar Moment | 362 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 344 |
| Swing Weight, Ounces | 12.13 |
| Swing Weight Calculated | 367.0 |
| Power, RDC | 49 |
| Control, RDC | 52 |
| Manueverability, RDC | 57 |
| Power, Calculated | 2096.5 |
| Head Points | 6.77 |
| Head Weight, % | 47% |
| Center of Percussion | 21.44 |
| Dwell Time, ms | 6.492 |
| Efective Stiffness - lbs | 27.42 |
| K, Lb/In | 166.67 |
| Recoil Weight | 167.7 |
| Twist Weight | 242.8 |
| End Weight | 131.6 |
| Tip Weight | 202./6 |
| 9 O'Clock | 94.7 |
| 3 O'Clock | 94.9 |
| Butt End | 144.5 |
| COF, Main | .339 |
| COF, Cross | .300 |



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