Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Zero Mercy Pearl
|
Roto Grip RST Hyperdrive Pearl
|
Track Synthesis Prime
|
Storm Next Factor
|
|
|---|---|---|---|---|
| Brand | Hammer | Roto Grip | Track | Storm |
| Line | High | HP4 | High | Premier |
| Coverstock | HK22C² Pearl | U-R1 Pearl | Prime Response Pearl (HK22C²) | R3S Pearl |
| Cover type | Pearl reactive | Pearl reactive | Pearl reactive | Pearl reactive |
| Core | Super Offset | RST AI | I-Core Gen4 | RAD-TQ |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.524 | 2.510 (16 lb) | 2.480 | 2.540 (16 lb) |
| Diff | 0.053 | 0.051 (16 lb) | 0.053 | 0.050 (16 lb) |
| Int. diff | 0.020 | 0.016 | 0.020 | 0.015 |
| Factory finish | 500, 1000, 1500 Siaair / Factory Compound | Power Edge | 500, 1500, 3000 Siaair Micro Pad | Power Edge |
| Lane condition | Medium oil | — | Medium oil | — |
| Flare potential | — | High | — | High |
| Reaction | Excessive backend | — | Length with strong backend | — |
| Color | Silver / Orange / Black | Space Blue / Deep Purple | Silver / Blue / Teal | Midnight |
| Release date | November 20, 2025 | September 19, 2025 | October 22, 2026 | December 19, 2025 |
| Status | Current | Current | Current | Current |
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