Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick Strike King - Red / Gold Pearl
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Hammer NU 2.0
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Storm Tropical Surge Gold-Bronze-Medallion
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ProBowl UnderCover black / yellow / pink pearl
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|---|---|---|---|---|
| Brand | Brunswick | Hammer | Storm | ProBowl |
| Line | Affordable | Mid | Tropical | — |
| Coverstock | SK13 Reactive | NU Active | Reactor Pearl | Ghost Trail Reactive |
| Cover type | Pearl reactive | — | Pearl reactive | Pearl reactive |
| Core | Strike King Symmetrical | LED | Surge Core | The Source |
| Core type | Symmetric | Symmetric | Symmetric | Symmetric |
| RG | 2.578 | 2.586 | 2.580 | 2.580 |
| Diff | 0.028 | 0.027 | 0.024 | 0.024 |
| Int. diff | — | — | — | — |
| Factory finish | 500 Siaair / Rough Buff / High Gloss | 500, 2000 Siaair Micro Pad | Power Edge | 1500 Grit Polished |
| Lane condition | — | Light oil – Medium oil | — | Medium oil |
| Flare potential | — | — | — | — |
| Reaction | — | Strong arc | — | — |
| Color | Red / Gold Pearl | Matte Grey | Gold / Bronze / Medallion | Black / Yellow / Pink |
| Release date | — | November 20, 2025 | July 10, 2026 | September 1, 2025 |
| Status | Retired | Current | Current | Current |
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