← Compare rackets

Side-by-side comparison using independent TWU lab measurements

Aggregated spec scores

Speed Pro 2026Black Ace (300) 2024
5.5Sweet Spot Forgiveness5.5
3.1Net & Volley Handling3.9
7.7Spin Potential7.6
7.2Arm Safety & Comfort9.7
5.6Raw Power3.9

Scores calculated from TWU RA, weight, head size and string pattern.

HEAD Speed Pro 2026
ProKennex Black Ace (300) 2024
Head size
100 sq in
100 sq in
Weight
326g
318g
RA stiffness
61 (Very flexible)
55 (Very flexible)
Swingweight
328 kg·cm²
324 kg·cm²
String pattern
16x19
16x19
Best for
flex, arm-friendly, control
flex, arm-friendly
Price tier
premium
mid

Lab data comparison

Measurements from Tennis Warehouse University (TWU)

RA Stiffness — lower = more flex & comfort

Speed Pro 2026
61
Black Ace (300) 2024
55

Weight — higher = more stability

Speed Pro 2026
326g
Black Ace (300) 2024
318g

Swingweight — higher = more plow-through momentum

Speed Pro 2026
328 kg·cm²
Black Ace (300) 2024
324 kg·cm²

Choose the Speed Pro 2026 if…

All-court players, intermediate to advanced

Very flexible — max comfort (RA 61)

🎾 Alexander ZverevPlays HEAD Gravity Pro under Speed Pro paint

Choose the Black Ace (300) 2024 if…

All-court players, intermediate to advanced

Very flexible — max comfort (RA 55)

🎵 String strategy for each frame

These are different rackets — they deserve different string setups.

Speed Pro 2026

Very flexible frame (RA 61) — arm-friendly. Pair with a crisp co-poly like Luxilon ALU Power Rough at 54–58 lbs to add control and prevent the string bed feeling too elastic.

Black Ace (300) 2024

Very flexible frame (RA 55) — arm-friendly. Pair with a crisp co-poly like Luxilon ALU Power Rough at 54–58 lbs to add control and prevent the string bed feeling too elastic.

⚖️ Specs Equalizer

Can I make these specs match?

To match the swingweight of the Speed Pro 2026 (SW 328), add 3g of lead tape at the 12 o'clock position on the Black Ace (300) 2024. This raises its swingweight from 324 to approximately 328 kg·cm².

Still not sure?

Find which fits your specific swing

Our 2-minute quiz maps your swing speed, play style, and priorities to TWU lab data to tell you exactly which of these — or something else — is your best match.

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