Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick Slingshot - Purple Pearl / Purple 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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Storm Concept
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|---|---|---|---|---|
| Brand | Brunswick | Storm | ProBowl | Storm |
| Line | Affordable | Tropical | — | Lab |
| Coverstock | PowrKoil 17 Reactive | Reactor Pearl | Ghost Trail Reactive | ARC Pearl |
| Cover type | — | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | Two-Piece Shaped Dynamic | Surge Core | The Source | Radius |
| Core type | — | Symmetric | Symmetric | Symmetric |
| RG | 2.581 | 2.580 | 2.580 | 2.590 (16 lb) |
| Diff | 0.021 | 0.024 | 0.024 | 0.019 (16 lb) |
| Int. diff | — | — | — | — |
| Factory finish | High Gloss | Power Edge | 1500 Grit Polished | 1000 Grit |
| Lane condition | — | — | Medium oil | — |
| Flare potential | — | — | — | Low |
| Reaction | — | — | — | — |
| Color | Purple Pearl | Gold / Bronze / Medallion | Black / Yellow / Pink | Teal / Imperial Blue |
| Release date | — | July 10, 2026 | September 1, 2025 | February 27, 2026 |
| Status | Retired | Current | Current | Current |
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