Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Radical Counter Attack Pearl
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Storm Tropical Surge Gold-Bronze-Medallion
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ProBowl UnderCover black / yellow / pink pearl
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Hammer NU 2.0
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|---|---|---|---|---|
| Brand | Radical | Storm | ProBowl | Hammer |
| Line | EZ-Use | Tropical | — | Mid |
| Coverstock | Ai-20 Pearl | Reactor Pearl | Ghost Trail Reactive | NU Active |
| Cover type | Pearl reactive | Pearl reactive | Pearl reactive | — |
| Core | Rack Attack 2 Symmetric | Surge Core | The Source | LED |
| Core type | Symmetric | Symmetric | Symmetric | Symmetric |
| RG | 2.575 | 2.580 | 2.580 | 2.586 |
| Diff | 0.023 | 0.024 | 0.024 | 0.027 |
| Int. diff | — | — | — | — |
| Factory finish | 500 & 1000 Siaair / Crown Factory Polish | Power Edge | 1500 Grit Polished | 500, 2000 Siaair Micro Pad |
| Lane condition | — | — | Medium oil | Light oil – Medium oil |
| Flare potential | — | — | — | — |
| Reaction | — | — | — | Strong arc |
| Color | Red Pearl | Gold / Bronze / Medallion | Black / Yellow / Pink | Matte Grey |
| Release date | — | July 10, 2026 | September 1, 2025 | November 20, 2025 |
| Status | Retired | Current | Current | Current |
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