Category Archives: Demo
Head Graphene 360+ Radical Series Comparative Data
Click Here to See Radical Series Comparison Data

Radical MP v21

A Close Look at Orange
The new, for 2021, Head Graphene 360+ Radical series is a radical step into colors that have always been the “mark” of the Radical Series but now it has gone even further into radicalism!
We think that is a good thing! Why mess around with just a little orange when you can go all out!
It is impossible to see the vibrancy of this orange without holding it in your hand! We invite to to hold one in your hand and even hit with it!
The Radical MP has been the most popular model over the years. This model has all the attributes of the Pro without the added weight, (which can be added later if needed)!
The thin beam carries over to the MP and Pro while the S has a slightly wider beam.
The S model fits the very necessary range of 102 square inch racquets because Head has, correctly, reduced the number of head sizes per model. The Speed series has the 100 square inch head size very well covered.
You will see all the specifications on each individual review that will be posted shortly.

Head Graphene 360+ Radical Pro

Head Graphene 360+ Radical S
Head Graphene 360+ Radical Pro v21
As you would expect the Radical Pro is the heaviest of the Radical Series, but only by a few grams! What! When we talk about grams to some players it might as well be angstroms or something like that. What the heck is a gram? For many in the US market is still “Talk to me in ounces, please!”
OK, there are 454 grams in a pound and 16 ounces in a pound. If I said a racquet weighs 285 grams what would you think? Or, if I said the racquet weighs 10 ounces which sounds better if you are weight averse?
OK, the Radical Pro weighs 13 grams more than the Radical MP so how many ounces is that?
Enough of this stuff! However, it is important to know what weight is and how it can be a significant factor in your playing. Weight is your friend!
As you will see in the following specifications a lot depends on how the weight is distributed throughout the racquet.
Here is a little hint; take a look at the swing weight of the MP and the Pro and tell me what you see.
The Radical Pro has the “sound grommets’ and the “control pattern” for those concerned with string spacing, and that should be many of you. String spacing can have a profound affect on durability and playability.
The enlarged circle was intended to show the elongated grommets which allow the string to move and effectively be a little longer meaning more energy return.
| Manufacturer | Head |
| Racquet Model | Head Graphene 360+ Radical Pro v21 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Victrex 7718 |
| Machine Used | TT Professional |
| ASPS, RDC | 54 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 53 |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 321 |
| Balance, Inch | 12.64 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.627 |
| Head Length | 12.80 |
| Head Area, cm2 | 624.3 |
| Head Area, Sq. Inch | 96.8 |
| Beam Width, mm, Shaft, Center, Tip | 20, 23, 21 |
| In Plane Stiffness, Pounds/In | 400.0 Lbs/In. |
| In Plane Stiffness, Kg/cm | 71.5 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .633 |
| Main String Grid | 7.25 |
| Cross String Grid | 9.40 |
| Density (% of head filled with string) | .688 |
| Average Cross String Space | .490 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .808 |
| Polar Moment | 324 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 310 |
| Swing Weight, Ounces | 10.93 |
| Swing Weight Calculated | 338 |
| Power, RDC | 47 |
| Control, RDC | 54 |
| Manueverability, RDC | 80 |
| Power, Calculated | 1889.7 |
| Head Points | 6.77 (negative = head heavy) |
| Head Weight, % | 46.9% |
| Center of Percussion | 20.8 |
| Dwell Time, ms, No Swing | 8.66 |
| Effective Stiffness - lbs | 29.1 |
| K, Lb/In (SBS) RDC | 173.06 |
| Recoil Weight | 152.11 |
| Twist Weight | 227.78 |
| End Weight | 136.1 |
| Tip Weight | 191.5 |
| Total Weight | 327.6 |
| 9 O'Clock | 98.8 |
| 3 O'Clock | 97.5 |
| Butt Cap | 131.3 |
| Total Weight | 327.6 |
Head Graphene 360+ Radical MP v21
Well, this is one way to get 2021 of to a great start! This eye popping Radical will certainly add excitement to your life!
This is truly orange with capitol O! You simply need to see this racquet to really appreciate the color.
But, color aside, this racquet continues the Radical silo of aggressive racquets for the aggressive player, or those that want to be!
This review is the MP which has been one of the most popular models over the years and I am happy to say they have not messed it up as is so often the case when introducing new products! This is a real Radical racquet!
A couple of things really stand out. First the string pattern is more dense in the center of the racquet by a small amount which allows for a more open pattern at the periphery for more comfort.
The top eight (8) grommets are on a separate insert and they are “straight” instead of radial.
The addition of “sound grommets” is intended to enhance power via greater string movement. and optimize sound and vibrations.
And the “in plane” stiffness is a little lower meaning the string bed stiffness may be slightly less at the same reference tension, also contributing to comfort.
If you are looking for a high performance tennis racquet that has room for some weight as you require it, this is the one. If you already need more weight that will be the Radical Pro that will be reviewed next.
| Manufacturer | Head |
| Racquet Model | Head Graphene 360+ Radical MP V21 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Victrex 7718 |
| Machine Used | TT Professional |
| ASPS, RDC | 55 |
| ASPS, FlexFour | 67 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 50 |
| Weight, Grams | 315 |
| Weight, Ounces | 11.11 |
| Balance, mm | 330 |
| Balance, Inch | 12.99 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.625 |
| Head Length | 12.81 |
| Head Area, cm2 | 624.7 |
| Head Area, Sq. Inch | 96.8 |
| Beam Width, mm, Shaft, Center, Tip | 20, 23, 21 |
| In Plane Stiffness, Pounds/In | 382.2 Lbs/In. |
| In Plane Stiffness, Kg/cm | 68.3 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .633 |
| Main String Grid | 7.13 |
| Cross String Grid | 9.31 |
| Density (% of head filled with string) | .677 |
| Average Cross String Space | .484 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .803 |
| Polar Moment | 330 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 313 |
| Swing Weight, Ounces | 11.04 |
| Swing Weight Calculated | 343 |
| Power, RDC | 46 |
| Control, RDC | 55 |
| Manueverability, RDC | 78 |
| Power, Calculated | 1909.3 |
| Head Points | 3.94 (negative = head heavy) |
| Head Weight, % | 48.2% |
| Center of Percussion | 20.9 |
| Dwell Time, ms, No Swing | 8.58 |
| Effective Stiffness - lbs | 29.4 |
| K, Lb/In (SBS) RDC | 176.28 |
| Recoil Weight | 148.6 |
| Twist Weight | 218.8 |
| End Weight | 125.1 |
| Tip Weight | 190.7 |
| Total Weight | 329.2 |
| 9 O'Clock | 96.8 |
| 3 O'Clock | 96.7 |
| Butt Cap | 120.0 |
| Total Weight | 313.5 |
Happy You Year!
Of course, we are all anxious for the new year to get here and erase 2020 from our memory!
We are designating 2021 as the You Year! So, Happy You Year!
For the last few years Racquet Quest, LLC has put more emphasis on “custom racquets” and 2021 will see this emphasis extended to “you racquets”!
What exactly does “you racquets” mean? It simply means that every racquet that leaves Racquet Quest, LLC is set up for your style of play and personal specifications. Yes, even if the racquet is Off-the-Shelf and not a full custom!
Many really good things are happening next year and we are glad you are going to be with us!


Racquet Quest, LLC


