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900 Global Portal specs
The 900 Global Portal is a solid reactive ball with the Conduit 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 | RB92 Solid |
|---|---|
| Cover type | Solid reactive |
| Core (weight block) | Conduit AI |
| Core type | Asymmetric |
| RG | 2.590 |
| Differential | 0.050 |
| Mass bias / intermediate diff. | 0.019 |
| Factory finish | Power Edge |
| Flare potential (maker) | High |
| Maker's category | 900 |
| Color | Red |
| Weights | 12-16 lb (Core numbers by weight table) |
| Release date (maker) | 10/02/26 |
| USBC approved | 8 September 2026 |
Numbers as 900 Global publishes them, checked 21 October 2026. Published for a 15-pound ball. 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 2.590. That is lower than 4% of the 134 current reactive and urethane balls in our table, so it sits on the high side. Storm says "a high RG ball delays its revving, offering more length and angular motion down the lane."
Differential 0.050. Higher than 57% of the balls in our table. Storm says "a high differential ball will create a sharper angle of entry into the pins."
Solid reactive cover. Storm says solid covers are "particularly effective on fresh oil patterns," and bowling.com calls them best on heavier oil.
Asymmetric core. Storm says asymmetric balls have "varying RG values along different axes" and more angular motion.
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:
- Motiv Primal Ghost: RG 2.550, differential 0.050
- Motiv Supra Sport: RG 2.550, differential 0.043
- Hammer Fallout: RG 2.520, differential 0.052
- Hammer Zero Mercy Solid: RG 2.524, differential 0.053
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.