Bowling ball core · Storm
Storm Centripetal Core
The core inside the Storm Marvel Maxx line
A symmetric core with early rev-up and medium flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.
- Symmetric
- RG 2.480
- Diff 0.050

Specs
RG AT 15 LB
2.480
Early rev-up
16% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.050
Medium flare
59% 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 | 2.480 | 0.052 | None |
| 15 lbUsed on this page | 2.480 | 0.050 | None |
| 14 lb | 2.530 | 0.049 | 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 Centripetal 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.
2 balls on this core list different numbers
- Storm Teal 30 Overseas Bowling Ball: RG 2.530, diff 0.049, mass bias Not listed at 15 lb
- Storm IQ Tour Black Overseas Bowling Ball: RG 2.520, diff 0.049, mass bias Not listed at 15 lb
Looking for a ball like your Marvel Maxx?
Balls with the Storm Centripetal Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Motiv Propulsion MXV Reactive
Medium to heavy oil

900 Global RB 89 Solid Reactive
Medium to heavy oil

Roto Grip Nanostar Pearl Reactive
Medium to heavy oil

Storm TX-25 Pearl Reactive
Medium to heavy oil

Radical HK22C+ Reactive
Medium to heavy oil

Roto Grip eTrax Plus Hybrid Reactive
Medium to heavy oil
Balls with the Storm Centripetal Core
None of the 18 balls with the Storm Centripetal Core are in stock at BowlersMart right now.
Show 18 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Storm Marvel U-NXT Overseas Bowling Ball | Storm Controll XL Urethane Solid | October 2022 |
| Storm Marvel Pearl Bowling Ball | Storm R2X Pearl Reactive | January 2015 |
| Storm Marvel Maxx Attack Overseas Bowling Ball | Storm NRG Hybrid Reactive | August 2019 |
| Storm Marvel Maxx Impact Overseas Bowling Ball | Storm NeX Solid Reactive | July 2020 |
| Storm Teal 30 Overseas Bowling Ball | Storm R2S Pearl Reactive | December 2020 |
| Storm IQ Tour Black Overseas Bowling Ball | Storm Reactor XG Hybrid Reactive | December 2019 |
| Storm Sword U Overseas Bowling Ball | Storm Controll Urethane Solid | January 2020 |
| Storm Marvel Maxx Strike Overseas Bowling Ball | Storm NRG Smooth Pearl Reactive | January 2020 |
| Storm Marvel Maxx World Overseas Bowling Ball | Storm NRG-2 Pearl Reactive | July 2020 |
| Storm Marvel Maxx Black Overseas Bowling Ball | Storm NRG Pro Solid Reactive | May 2022 |
| Storm Marvel Maxx Tour Bowling Ball | Storm NeX Hybrid Reactive | June 2023 |
| Storm Marvel Maxx Purple Overseas Bowling Ball | Storm NRG Pro Pearl Reactive | June 2023 |
| Storm Marvel Zero Overseas Bowling Ball | Storm NeX Pearl Reactive | November 2022 |
| Storm Marvel Maxx Pink Overseas Bowling Ball | Storm NRG Pearl Reactive | September 2024 |
| Storm Marvel Maxx Space Overseas Bowling Ball | Storm R2S Pearl Reactive | August 2024 |
| Storm Marvel Smash Overseas Bowling Ball | Storm EXO Pearl Reactive | April 2022 |
| Storm Marvel Blast Overseas Bowling Ball | Storm NRG Pro Pearl Reactive | April 2024 |
| Storm Marvel Pearl AI Overseas Bowling Ball | Storm NRG Pearl Reactive | December 2023 |
Where the Storm Centripetal 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.
Same family: Storm Centripetal HD A.I. Core Same family: Storm Centripetal HD Bowling Ball Core
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
Roto Grip | Symmetric | 2.480 | 0.050 | Same RG and differential |
|
|
Radical | Symmetric | 2.480 | 0.051 | RG 0.000 · Diff +0.001 |
|
|
Storm | Symmetric | 2.480 | 0.051 | RG 0.000 · Diff +0.001 |
|
|
900 Global | Asymmetric | 2.480 | 0.050 | Same RG and differential |
|
|
Motiv | Asymmetric | 2.480 | 0.050 | Same RG and differential |
|
|
Roto Grip | Asymmetric | 2.480 | 0.049 | RG 0.000 · Diff −0.001 |
Matches use 15 lb RG and differential.
Drilling and tools
Custom-engineered for the player who desires low, stable spin with forgiveness, the Centripetal Core features a center of gravity that is extremely low. The innovative cascading channels engage the circumference of the weight block and maximize mid-lane control with a smoother change of direction downlane.
Questions bowlers ask
What is the RG of the Storm Centripetal Core?
At 15 lb the Storm Centripetal Core has an RG of 2.480. It ranges from 2.480 to 2.650 across the listed weights.
What is the 14 lb RG of the Storm Centripetal Core?
At 14 lb the RG is 2.530.
What is the differential of the Storm Centripetal Core?
At 15 lb the differential is 0.050. This is a symmetric core, so mass bias is not applicable.
Which bowling balls use the Storm Centripetal Core?
Storm Marvel U-NXT Overseas Bowling Ball, Storm Marvel Pearl Bowling Ball, Storm Marvel Maxx Attack Overseas Bowling Ball, Storm Marvel Maxx Impact Overseas Bowling Ball, Storm Teal 30 Overseas Bowling Ball. 0 are in stock now.
Can I still buy a ball with the Storm Centripetal Core?
Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Motiv Evoke Mayhem Bowling Ball, 900 Global Origin EX Bowling Ball, Roto Grip Rockstar Amped Bowling Ball, Storm Phaze 2 Pearl Bowling Ball, Radical No Doubt Solid Bowling Ball, Roto Grip Attention Star S2 Bowling Ball.
How do the Storm Centripetal Core specs change by weight?
At 16 lb: RG 2.480, differential 0.052. At 12 lb: RG 2.650, differential 0.035.
How does the Storm Centripetal 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 Centripetal core page (2022), as published by the manufacturer.
Baseline. The baseline is 265 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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