Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
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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Storm Concept
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|---|---|---|---|---|
| Brand | Storm | ProBowl | Hammer | Storm |
| Line | Tropical | — | Mid | Lab |
| Coverstock | Reactor Pearl | Ghost Trail Reactive | NU Active | ARC Pearl |
| Cover type | Pearl reactive | Pearl reactive | — | Pearl reactive |
| Core | Surge Core | The Source | LED | Radius |
| Core type | Symmetric | Symmetric | Symmetric | Symmetric |
| RG | 2.580 | 2.580 | 2.586 | 2.590 (16 lb) |
| Diff | 0.024 | 0.024 | 0.027 | 0.019 (16 lb) |
| Int. diff | — | — | — | — |
| Factory finish | Power Edge | 1500 Grit Polished | 500, 2000 Siaair Micro Pad | 1000 Grit |
| Lane condition | — | Medium oil | Light oil – Medium oil | — |
| Flare potential | — | — | — | Low |
| Reaction | — | — | Strong arc | — |
| Color | Gold / Bronze / Medallion | Black / Yellow / Pink | Matte Grey | Teal / Imperial Blue |
| Release date | July 10, 2026 | September 1, 2025 | November 20, 2025 | February 27, 2026 |
| Status | Current | Current | Current | Current |
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