Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick Absolute Nirvana
|
Storm Ion Max Pearl
|
Hammer Black Widow Spare+
|
Hammer Black Widow Viz-A-Ball
|
|
|---|---|---|---|---|
| Brand | Brunswick | Storm | Hammer | Hammer |
| Line | Pro | Premier | Spare Ball | Spare Ball |
| Coverstock | ECS Hook | NRG Pearl | Polyester | Polyester |
| Cover type | — | Pearl reactive | Polyester | Polyester |
| Core | Nirvana Ultra Low RG | Element Max AI | Gas Mask | Gas Mask |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.477 | 2.470 (16 lb) | 2.480 | 2.480 |
| Diff | 0.054 | 0.053 (16 lb) | 0.058 | 0.058 |
| Int. diff | 0.013 | 0.013 | 0.013 | 0.013 |
| Factory finish | 500, 1000 Siaair Micro Pad | Power Edge | 500, 1000, 2000 Siaair / Factory Polish | Factory Polish |
| Lane condition | — | — | Light oil | Light oil |
| Flare potential | — | High | — | — |
| Reaction | — | — | Straight | Straight |
| Color | Black / Blue / Gray | Cobalt / Aqua / Ivory | White Diamond | — |
| Release date | — | March 13, 2026 | September 17, 2026 | November 19, 2021 |
| Status | Retired | Current | Current | Current |
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