Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick C•(System) Alpha-Max
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Storm Next Factor
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Roto Grip RST Hyperdrive Pearl
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Hammer Zero Mercy Hybrid
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|---|---|---|---|---|
| Brand | Brunswick | Storm | Roto Grip | Hammer |
| Line | Pro | Premier | HP4 | High |
| Coverstock | CFT Alpha-Max | R3S Pearl | U-R1 Pearl | HK22C² Hybrid |
| Cover type | — | Pearl reactive | Pearl reactive | Hybrid reactive |
| Core | Asymmetric I-Block | RAD-TQ | RST AI | Super Offset |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.535 | 2.540 (16 lb) | 2.510 (16 lb) | 2.524 |
| Diff | 0.050 | 0.050 (16 lb) | 0.051 (16 lb) | 0.053 |
| Int. diff | 0.017 | 0.015 | 0.016 | 0.020 |
| Factory finish | 500, 800, and 4000 Siaair Micro Pad | Power Edge | Power Edge | 500, 1000, 1500 Siaair / Factory Compound |
| Lane condition | — | — | — | Medium oil – Heavy oil |
| Flare potential | — | High | High | — |
| Reaction | — | — | — | Excessive backend |
| Color | Black / Blue / Teal | Midnight | Space Blue / Deep Purple | Black / Silver / White / Red |
| Release date | — | December 19, 2025 | September 19, 2025 | September 17, 2026 |
| Status | Retired | Current | Current | Current |
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