Bowling ball core · Storm
Storm Circuit Core
The core inside the Storm Electrify line
A symmetric core with mid-lane rev-up and low flare, built for medium oil. Balls with this core are no longer available at BowlersMart.
- Symmetric
- RG 2.510
- Diff 0.030

Specs
RG AT 15 LB
2.510
Mid-lane rev-up
53% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.030
Low flare
8% of the reactive and urethane balls we stock have a lower differential.
MASS BIAS AT 15 LB
None
Symmetric core
Symmetric cores have no mass bias marker to place when drilling.
| Weight | RG | DifferentialDiff | Mass biasMB |
|---|---|---|---|
| 16 lb | 2.500 | 0.031 | None |
| 15 lbUsed on this page | 2.510 | 0.030 | None |
| 14 lb | 2.530 | 0.031 | None |
| 13 lb | 2.590 | 0.045 | None |
| 12 lb | 2.650 | 0.035 | None |
Source: Storm published specs, as shown on BowlersMart’s original Storm Circuit core page (2022). RG and differential change with ball weight; use the row for the weight you throw. The highlighted 15 lb row is the one used on this page.
Looking for a ball like your Electrify?
Balls with the Storm Circuit Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Brunswick Rhino Red Black Gold Pearl
Brunswick R-16 Pearl Reactive
Dry to medium oil

SWAG Rage Hybrid Reactive
Medium oil

Hammer HK22 Aggression Hybrid Reactive
Medium to heavy oil

SWAG Lunacy Pearl AP26
Dry to medium oil, medium oil

Roto Grip VTC Pearl Reactive
Dry to medium oil, medium oil

Storm R2S Pearl Reactive
Dry to medium oil, medium oil
Balls with the Storm Circuit Core
None of the 5 balls with the Storm Circuit Core are in stock at BowlersMart right now.
Show 5 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Storm Electrify BSY Bowling Ball | Storm Reactor Pearl Reactive | April 2023 |
| Storm Electrify Hybrid Bowling Ball | Storm Reactor Hybrid | May 2020 |
| Storm Electrify Pearl Bowling Ball | Storm Reactor Pearl Reactive | May 2020 |
| Storm Electrify Solid Bowling Ball | Storm Reactor Solid | May 2021 |
| Storm Electrify Gold Orange Bowling Ball | Storm Reactor Pearl Reactive | September 2022 |
Where the Storm Circuit sits
Each dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
Nearest cores, zoomed in
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
SWAG | Symmetric | 2.520 | 0.030 | RG +0.010 · Diff 0.000 |
|
|
Brunswick | Symmetric | 2.524 | 0.030 | RG +0.014 · Diff 0.000 |
|
|
SWAG | Symmetric | 2.520 | 0.034 | RG +0.010 · Diff +0.004 |
|
|
Hammer | Asymmetric | 2.500 | 0.034 | RG −0.010 · Diff +0.004 |
|
|
Roto Grip | Symmetric | 2.530 | 0.030 | RG +0.020 · Diff 0.000 |
|
|
Storm | Symmetric | 2.490 | 0.029 | RG −0.020 · Diff −0.001 |
Matches use 15 lb RG and differential.
Drilling and tools
Turn on JavaScript to compare with your ball.Balls with the Storm Circuit CoreNone of the 5 balls with the Storm Circuit Core are in stock at BowlersMart right now.Show 5 balls no longer available at BowlersMartMore bowling balls with the Storm Circuit CoreBallCoverFirst seenStorm Electrify BSY Bowling BallStorm Reactor Pearl ReactiveApril 2023Storm Electrify Hybrid Bowling BallStorm Reactor HybridMay 2020Storm Electrify Pearl Bowling BallStorm Reactor Pearl ReactiveMay 2020Storm Electrify Solid Bowling BallStorm Reactor SolidMay 2021Storm Electrify Gold Orange Bowling BallStorm Reactor Pearl ReactiveSeptember 2022Where the Storm Circuit sitsEach dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.All coresSymmetricAsymmetricStorm onlyAny brand900 GlobalBrunswickColumbia 300DV8EboniteEpicHammerKR StrikeforceMotivRadicalRoto GripSWAGStormTrack+−ResetZoom to this coreDV8 Larceny Core, RG 2.471, diff 0.028DV8 Renegade Core, RG 2.499, diff 0.040Track I-Core Gen4, RG 2.480, diff 0.053Brunswick Vintage Light Bulb Low RG Core, RG 2.568, diff 0.032Brunswick Dual Centric Core, RG 2.509, diff 0.047Ebonite Big Time Core, RG 2.508, diff 0.054Hammer Stacked LED Core, RG 2.545, diff 0.047Hammer Vindicator Core, RG 2.474, diff 0.053Radical Vexed Variant Asymmetric Core, RG 2.490, diff 0.045Radical Modified Intel Symmetric Core, RG 2.483, diff 0.032Motiv Affliction V2 Core, RG 2.480, diff 0.055Storm Element Tour A.I. Core, RG 2.470, diff 0.0
Questions bowlers ask
What is the RG of the Storm Circuit Core?
At 15 lb the Storm Circuit Core has an RG of 2.510. It ranges from 2.500 to 2.650 across the listed weights.
What is the 14 lb RG of the Storm Circuit Core?
At 14 lb the RG is 2.530.
What is the differential of the Storm Circuit Core?
At 15 lb the differential is 0.030. This is a symmetric core, so mass bias is not applicable.
Which bowling balls use the Storm Circuit Core?
Storm Electrify BSY Bowling Ball, Storm Electrify Hybrid Bowling Ball, Storm Electrify Pearl Bowling Ball, Storm Electrify Solid Bowling Ball, Storm Electrify Gold Orange Bowling Ball. 0 are in stock now.
Can I still buy a ball with the Storm Circuit Core?
Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Brunswick Rhino Red Black Gold Pearl Bowling Ball, SWAG Craze Hybrid Bowling Ball, Hammer Black Widow Tour V1 Bowling Ball, SWAG Insanity Pearl Bowling Ball, Roto Grip Hustle VP Bowling Ball, Storm IQ Tour Sapphire Bowling Ball.
How do the Storm Circuit Core specs change by weight?
At 16 lb: RG 2.500, differential 0.031. At 12 lb: RG 2.650, differential 0.035.
How does the Storm Circuit Core compare with my ball?
Type the ball you throw into the Compare with your ball box on this page. It shows the RG and differential side by side and saves your bag for every core page.
Sources and method
Specs. Storm published specs, as shown on BowlersMart’s original Storm Circuit core page (2022), as published by the manufacturer.
Baseline. The baseline is 212 in-stock, published reactive and urethane balls. Plastic and polyester covers, 2-piece, 3-piece and pancake cores, missing covers and missing RG or differential values are excluded.
Percentiles. Percentiles are the share of baseline balls with a strictly lower or higher value; ties are not counted.
Nearest cores. Nearest cores are ranked by distance on standardized 15 lb RG and differential, with the same symmetric or asymmetric shape preferred among near ties (distance bands of 0.1).
Mass bias. Mass bias is compared among asymmetric balls with numeric mass bias only.
Updated. Catalog and page updated 2026-10-16.


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