Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Ebonite Emerge
|
Roto Grip RST Hyperdrive Pearl
|
Brunswick Strategy
|
Ebonite Spartan Pearl
|
|
|---|---|---|---|---|
| Brand | Ebonite | Roto Grip | Brunswick | Ebonite |
| Line | Pro | HP4 | Pro | Pro |
| Coverstock | HK22 - Optimize Pearl | U-R1 Pearl | HK22C² - EVO Pearl | HK22C² - Optimize Pearl |
| Cover type | Pearl reactive | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | Emerge | RST AI | Dual Centric | Iron Fist V2 |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.510 | 2.510 (16 lb) | 2.509 | 2.473 |
| Diff | 0.053 | 0.051 (16 lb) | 0.047 | 0.053 |
| Int. diff | 0.021 | 0.016 | 0.016 | 0.019 |
| Factory finish | 500, 1000, 1500 Siaair / Factory Compound | Power Edge | 500, 1000, 1500 Siaair / Crown Factory Compound | 500, 1000, 1500 Siaair / Factory Compound |
| Lane condition | Medium oil – Heavy oil | — | — | Medium oil – Heavy oil |
| Flare potential | — | High | — | — |
| Reaction | Length with strong backend | — | — | Strong mid-lane and backend |
| Color | Black / Silver / Purple | Space Blue / Deep Purple | Black / Blue / Silver | Sky Blue / Purple / Carbon |
| Release date | July 13, 2023 | September 19, 2025 | April 16, 2026 | July 16, 2026 |
| Status | Retired | Current | Current | Current |
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