- Cover
- R4S Pearl
- Factory finish
- 1500-grit Polish
- Color
- Purple / Gunmetal / Gold
- Core (15 lb)
- RAD-X
- R.G. / Differential / Bias
16 lb 2.470 0.055 0.019 15 lb 2.480 0.054 0.018 14 lb 2.520 0.054 0.017 13 lb 2.570 0.032 0.010 12 lb 2.590 0.029 0.008 - Release date
- March 2, 2020
- Balls with the same cover
- These balls have the same R4S Pearl cover as the Dual Lock:
- Balls with the same core
- These balls have the same 15-lb RAD-X core as the Dual Lock:
- From the manufacturer
Through its storied career, the RAD-X Core has established its reputation within the Storm ranks. Deriving from the famed origins of Radial Accelerating Disk™ technology, this weight block gives the bowler a fast, tight spin radius with no shortage of movement down the lane. R4S has come from several generations of coverstock material. With an increased porosity that is higher than the rest of its lineage, you can feel confident that it will grab when it sees friction at the end of the pattern.
| Name | Core (15 lb) | Released | |
 | Street Fight Storm | Iron Cross symmetric | Oct 4, 2016 |
| Name | Cover | Released | |
 | Sure Lock Storm | GI-17 Solid | Mar 14, 2017 |
 | Snap Lock Storm | R3S Pearl | Jun 7, 2016 |
 | Lock Storm | GI-15 Hybrid | Oct 6, 2015 |