Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Amp Up
|
Storm Phaze II Pearl
|
Hammer Hammerhead Pearl
|
Ebonite Game Breaker 5 Pearl
|
|
|---|---|---|---|---|
| Brand | Hammer | Storm | Hammer | Ebonite |
| Line | — | Master | Mid | Mid |
| Coverstock | Overdrive Pearl | TX-25 Pearl | HK22 - Aggression Pearl | HK22 - GB 12.7 Pearl |
| Cover type | Pearl reactive | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | Powershot | Velocity | Spheroid | Enhanced V2 |
| Core type | — | Symmetric | Symmetric | — |
| RG | 2.490 | 2.480 (16 lb) | 2.481 | 2.480 |
| Diff | 0.054 | 0.051 (16 lb) | 0.048 | 0.048 |
| Int. diff | — | — | — | — |
| Factory finish | 500-500-500 Abralon®, 1500 Abranet™, Powerhouse™ Factory Finish | Power Edge | 500, 1000, 1500 Siaair / Factory Compound | 500, 1000, 1500 Siaair / Factory Compound |
| Lane condition | Medium oil | — | Medium oil | Medium oil |
| Flare potential | — | Medium-high | — | — |
| Reaction | — | — | Length with aggressive backend | Length with strong backend |
| Color | Purple / Gold / Green | Red / Blue / Purple | Onyx / Silver / Yellow | Purple / Blue |
| Release date | — | November 28, 2025 | January 15, 2026 | March 20, 2025 |
| Status | Retired | Current | Current | Current |
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