Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer NU 2.0
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Storm Tropical Surge Gold-Bronze-Medallion
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Storm Concept
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ProBowl Challenger black / purple / silver pearl
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|---|---|---|---|---|
| Brand | Hammer | Storm | Storm | ProBowl |
| Line | Mid | Tropical | Lab | Reactive |
| Coverstock | NU Active | Reactor Pearl | ARC Pearl | Conquering Pearl |
| Cover type | — | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | LED | Surge Core | Radius | Challenger core |
| Core type | Symmetric | Symmetric | Symmetric | Symmetric |
| RG | 2.586 | 2.580 | 2.590 (16 lb) | 2.590 |
| Diff | 0.027 | 0.024 | 0.019 (16 lb) | 0.018 |
| Int. diff | — | — | — | — |
| Factory finish | 500, 2000 Siaair Micro Pad | Power Edge | 1000 Grit | 500 grit / Factory compound / Factory Polish |
| Lane condition | Light oil – Medium oil | — | — | Medium-light oil |
| Flare potential | — | — | Low | — |
| Reaction | Strong arc | — | — | Clean through the heads with a smooth, controlled backend |
| Color | Matte Grey | Gold / Bronze / Medallion | Teal / Imperial Blue | Black / Purple / Silver |
| Release date | November 20, 2025 | July 10, 2026 | February 27, 2026 | — |
| Status | Current | Current | Current | Current |
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