Category Archives: True Tension
Head Extreme Pro 2026
If you are thinking of a new 98 square inch high-performance racquet, don’t make a decision until you try this one!
This one is the new Head Extreme Pro for 2026, with a beautiful cosmetic upgrade and material enhancements that improve performance.
Something that you may not notice but is very good is the elongated cross-string holes in the twelve (12) central cross strings’ location. This design increases the effective hitting area by a couple of inches without increasing the head width. This is not unique to the Extreme Series, but it does not show up in the Speed or Gravity series.
Head Extreme Pro 2026
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Extreme Pro 2026 |
| Reference Tension | 55 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC/Units | 50 |
| String Bed Stiffness -FlexFour/Pounds | 63 |
| Strig Bed Stiffness - SBS/Pounds | 43.5 |
| String Bed Stiffness - ERT/Kg/cm | 34 |
| Racquet Flex, RDC/Units | 67 |
| Racquet Flex, FlexFour/Lbs | 43.5 |
| Racquet - In Plane Stiffness/Lbs/Inch | 493.6 |
| Weight, Grams | 330 |
| Weight, Ounces | 11.64 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.56 |
| Head Length | 12.87 |
| Head Area, cm2 | 623.8 |
| Head Area, Sq. Inch | 96.7 |
| Beam Height @ Grip, mm | 20.5 |
| Beam Height @ Mid, mm | 23.3 |
| Beam Height @ Tip | 22.4 |
| Beam Width @ Grip, mm | 15.7 |
| Beam Width @ Throat, mm | 134.0 |
| Beam Width @ Mid, mm | 11.5 |
| Beam Width @ Tip, mm | 13.9 w/Bumper Guard |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .625 |
| Main String Grid Inch/mm | 7.21/183.1 |
| Cross String Grid Inch/mm | 9.63/244.6 |
| Density (% of head filled w/ string) | .728 |
| Average Cross String Space | .507 |
| Average Main String Space | .457 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.2 |
| First Moment, Nm | .819 |
| Polar Moment | 331.0 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 317 |
| Swing Weight, Ounces | 11.18 |
| Swing Weight Calculated | 344.3 |
| Power, RDC | 55 |
| Control, RDC | 48 |
| Manueverability, RDC | 75 |
| Power, Calculated | 2074.2 |
| Head Points | 6.30 |
| Head Weight, % | 47.1% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 6.62 |
| Efective Stiffness - lbs | 26.4 - Flex Four Data |
| K, Lb/In | 160.26 |
| Dynamic Stiffness/Lbs | 369.5 |
| Dynamic Force/Lbs | 141.8 |
| GDR Ratio: static/dynamic | 1.94 |
| Recoil Weight | 155.24 |
| Twist Weight | 226.4 |
| End Weight | 134.9 |
| Tip Weight | 193.9 |
| 9 O'Clock | 97.5 |
| 3 O'Clock | 95.8 |
| Butt End | 136.9 |
| COF, Main | .348 |
| COF, Cross | .352 |
Big 10 Tennis Player of the Week.
Jack Anthrop has been playing extraordinary tennis for a long time and was recently named Big 10 Tennis Player of the Week after an impressive outing in Dallas!
The link below will take you to the Ohio State post; however, I want to share some of the things Jack has done to secure the game he has.
Jack uses a Head Speed SMU racquet. The head size is 96 square inches and has a swing weight of 333 kg/cm^. This inertia couples with the overall weight of 352 grams (12.4 oz) to create stability and power.
Jack uses MonoGut ZX Pro natural at a reference tension of 56 pounds and string bed stiffness of 60 pounds. This creates a dynamic stiffness of 393.6 PPI.
Jack has been using Ashaway MonoGut ZX Pro since the age of 9! Yep, that’s right, age 9! MonoGut ZX and ZX Pro material is PEEK, a unique string that offers outstanding comfort, feel, and power with better durability than some other materials.
It is our position that more players of any level should consider MonoGut ZX or ZX Pro (thinner). It really just makes sense…just ask Jack, Big 10 Men’s Tennis Player of the Week!
Let us know if you have questions about Jack’s racquet or string. We have been working with Jack since age 9, and we would like to share what we can to help achieve your tennis goal(s).
Thank you, Head and Ashaway, for your continued support!
mens-tennis-anthrop-earns-big-ten-player-of-the-week
Congratulations, Jack, your new Head Speed SMU’s are on the way.
Head Speed SMU
Head Speed SMU
More Face Time?
We have found a good format for our video content creation and presentation.
After trying several highly rated and pricey options, we have settled on QuickTime, iMovie, and YouTube.
- Quick Time for recording the video
- iMovie for editing (which we want to keep to a minimum)
- YouTube for presentation
Now there is an “RQ on YouTube” button on the home page menubar! Right now, this is at the very right side of the menu, so please use it to get to our YouTube channel easily.
Thank yo for joining us for “more face time”!
Pro Stock & Special Make Up (SMU) Racquets
Pro Stock & SMU racquets are a huge part of our business and Pro Stock and SMU’s continue to grow!
Soon, we are going to post the current inventory of Pro Stock and SMU racquets that are at the World Headquarters; however, in the meantime, please visit our YouTube channel to see and hear more about what we do.
Full Custom Head Gravity Tour 98!
We receive the racquets in the uncut, raw state, then make them yours.
The finished Pro Stock(s) are made to your specifications:
- Length: Up to 28 inches
- Weight
- Inertia (swing weight)
- Grip pallet: Head TK82 (flat) or TK82S (round)
- Perfect Pallet: Custom Printed Soft Grip System
- Grip size: Size 2 to 4
- Grip Material: Leather or Synthetic
- String
Racquet Quest, LLC
