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900 Global Cove specs
The 900 Global Cove is a hybrid reactive ball with the Magna AI 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 | 85 Hybrid |
|---|---|
| Cover type | Hybrid reactive |
| Core (weight block) | Magna AI |
| Core type | Symmetric |
| RG | 2.480 |
| Differential | 0.043 |
| Factory finish | 4000 Grit |
| Flare potential (maker) | Medium-High |
| Maker's category | 800 |
| Color | Blue/Sand/Teal |
| Release date (maker) | 08/15/25 |
| USBC approved | 8 July 2025 |
Numbers as 900 Global publishes them, checked 21 October 2026. 900 Global 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 2.480. That is lower than 65% 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 0.043. Higher than 41% of the balls in our table. Storm says "a low differential ball tends to have a more predictable, controlled motion."
Hybrid reactive cover. Hybrids mix solid and pearl; Storm says they suit bowlers who need a ball "that can adapt to a variety of lane conditions."
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 900 Global.
Balls with similar numbers
Same cover type, closest RG and differential in our table:
- Roto Grip hyped UP!: RG 2.490, differential 0.043
- Track Theorem Delta: RG 2.473, differential 0.046
- Ebonite Game Breaker 5 Hybrid: RG 2.480, differential 0.048
- Brunswick Warning Alert: RG 2.478, differential 0.037
Sources: 900 Global product page; Storm, "Inside The Bowling Ball"; Storm, "The Coverstock"; bowling.com coverstock FAQ; USBC Approved Ball List (20 October 2026); USBC Equipment Specifications Manual.