String & Racket Finder
PRO KENNEX tennis rackets compared
Kinetic System: sealed chambers in the hoop holding thousands of free micro-bearings that shift at impact and eat shock — the rare gimmick that is also a mechanism, with decades of tennis-elbow testimony behind it. The arm-friendly refuge brand; Ki Q+ and Black Ace both carry it.
Compare these frames in the finder →Specifications and scores
All 8 current PRO KENNEX models, with unstrung weight, head size, string pattern, stiffness (RA), swingweight, balance and beam width, followed by the eleven playing axes rated 0–10 and a difficulty rating.
| Model | Weight | Head | Pattern | Stiffness | Swingweight | Balance | Beam | Ctrl | Prec | Spin | Pwr | Feel | Stab | Man | Serve | Smsh | Slice | Ret | Diff |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ki Q+ Tour | 305g | 98 | 16x19 | 63 RA | ~320 | ~315 | 22 | 6 | 7 | 8 | 6 | 8 | 6 | 7 | 7 | 6 | 7 | 6 | 5 |
| Ki Q+ Tour Pro | 305g | 98 | 18x20 | 62 RA | ~326 | ~310 | 21 | 9 | 9 | 5 | 6 | 9 | 9 | 4 | 7 | 8 | 9 | 8 | 8 |
| Ki Q+ 5 | 300g | 100 | 16x20 | 63 RA | ~318 | ~320 | 22.5 | 8 | 8 | 7 | 7 | 7 | 6 | 7 | 7 | 6 | 8 | 7 | 5 |
| Ki Q+ 5 Pro | 310g | 100 | 16x20 | 63 RA | ~326 | ~315 | 22.5 | 8 | 8 | 7 | 8 | 8 | 9 | 4 | 8 | 8 | 8 | 9 | 7 |
| Ki Q+ 15 | 285g | 105 | 16x19 | 62 RA | ~312 | ~330 | 24 | 6 | 5 | 9 | 7 | 9 | 6 | 5 | 8 | 6 | 7 | 7 | 2 |
| Black Ace 300 | 300g | 100 | 16x19 | 65 RA | ~318 | ~320 | 22 | 6 | 7 | 9 | 7 | 8 | 6 | 7 | 8 | 6 | 7 | 7 | 5 |
| Black Ace 315 | 315g | 100 | 16x19 | 65 RA | ~326 | ~313 | 22 | 6 | 7 | 9 | 8 | 9 | 9 | 4 | 9 | 8 | 7 | 9 | 7 |
| Black Ace Pro | 305g | 97 | 16x19 | 64 RA | ~322 | ~315 | 21.5 | 7 | 8 | 8 | 6 | 8 | 6 | 7 | 7 | 6 | 7 | 6 | 8 |
Swipe the table sideways for the remaining columns.
Axes, in order: Control (flat) · Precision · Spin · Power · Feel / comfort · Stability · Maneuverability · Serve · Smash & overhead · Slice / touch · Return / blocking. Difficulty is how demanding the frame is to use well, not how good it is.
Choosing between them
Frames in one family share a construction story but not a playing character — head size, pattern and swingweight move the numbers above far more than the marketing does. If you want a shortlist matched to how you actually play, and a string bed matched to the frame, the finder does that in a few taps.