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Storm !Q Tour Edition specs
The Storm !Q Tour Edition is a solid reactive ball with the C3C core. Here are its published specs, how they compare with the other current balls in our table, and what the numbers mean on the lane.
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| Coverstock | R2S Solid |
|---|---|
| Cover type | Solid reactive |
| Core (weight block) | C3C |
| Core type | Symmetric |
| RG | 2.490 |
| Differential | 0.035 |
| Factory finish | 4000 Grit |
| Flare potential (maker) | Medium-Low |
| Maker's category | Master |
| Color | Midnight Blue |
| Release date (maker) | 07/10/12 |
Numbers as Storm publishes them, checked 21 October 2026. Storm doesn't say which ball weight these numbers are for. Drilling changes how a ball behaves, so a pro shop's layout matters as much as these numbers.
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What the numbers mean
RG 2.490. That is lower than 57% of the 134 current reactive and urethane balls in our table, so it sits on the low side. Storm says "a low RG ball will rev up quickly and roll smoothly."
Differential 0.035. Higher than 18% of the balls in our table. Storm says "a low differential ball tends to have a more predictable, controlled motion."
Solid reactive cover. Storm says solid covers are "particularly effective on fresh oil patterns," and bowling.com calls them best on heavier oil.
Symmetric core. Storm says symmetric balls have "RG values consistent across all axes" and a smooth, predictable roll.
USBC allows an RG from 2.447 to 2.813 inches and a differential of at most 0.060 inches (Equipment Specifications Manual, March 2026). Our ball spec table lists every current ball we track, and who makes bowling balls covers which company owns Storm.
Balls with similar numbers
Same cover type, closest RG and differential in our table:
- Radical Vexed: RG 2.498, differential 0.036
- DV8 Dark Side Curse: RG 2.480, differential 0.036
- Motiv Venom Shock: RG 2.480, differential 0.034
- Storm Ion Pro Solid: RG 2.470, differential 0.035
Sources: Storm product page; Storm, "Inside The Bowling Ball"; Storm, "The Coverstock"; bowling.com coverstock FAQ; USBC Equipment Specifications Manual.