Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick Mastermind Scholar
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Roto Grip Transform Pearl
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Roto Grip RST Hyperdrive Pearl
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Storm Ion Max Pearl
|
|
|---|---|---|---|---|
| Brand | Brunswick | Roto Grip | Roto Grip | Storm |
| Line | Pro | HP5 | HP4 | Premier |
| Coverstock | Honor Roll A+ Pearl Reactive | Microtrax Pearl | U-R1 Pearl | NRG Pearl |
| Cover type | Pearl reactive | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | Mastermind Ultra Low RG | Morph Wing | RST AI | Element Max AI |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.488 | 2.500 (16 lb) | 2.510 (16 lb) | 2.470 (16 lb) |
| Diff | 0.052 | 0.050 (16 lb) | 0.051 (16 lb) | 0.053 (16 lb) |
| Int. diff | 0.015 | 0.015 | 0.016 | 0.013 |
| Factory finish | 500 Siaair / Royal Compound / Royal Shine | Power Edge | Power Edge | Power Edge |
| Lane condition | — | — | — | — |
| Flare potential | — | High | High | High |
| Reaction | — | — | — | — |
| Color | Blue / Silver / Gold Pearl | Red / Cherry / Shadow | Space Blue / Deep Purple | Cobalt / Aqua / Ivory |
| Release date | — | July 10, 2026 | September 19, 2025 | March 13, 2026 |
| Status | Retired | Current | Current | Current |
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