Bowling ball core · Storm
Storm Ignition Core
Asymmetric Storm core
An asymmetric core with mid-lane rev-up and high flare, built for medium to heavy oil. 1 of the 7 balls with this core are in stock at BowlersMart.
- Asymmetric
- RG 2.490
- Diff 0.052
- MB 0.019

Specs
RG AT 15 LB
2.490
Mid-lane rev-up
34% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.052
High flare
72% of the reactive and urethane balls we stock have a lower differential.
MASS BIAS AT 15 LB
0.019
Strong asymmetry
72% of the asymmetric reactive and urethane balls we stock have a lower mass bias.
| Weight | RG | DifferentialDiff | Mass biasMB |
|---|---|---|---|
| 16 lb | 2.500 | 0.051 | 0.018 |
| 15 lbUsed on this page | 2.490 | 0.052 | 0.019 |
| 14 lb | 2.530 | 0.049 | 0.018 |
| 13 lb | 2.570 | 0.032 | 0.010 |
| 12 lb | 2.590 | 0.029 | 0.008 |
Source: Storm published specs, as shown on BowlersMart’s original Storm Ignition 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 Gate 2 Overseas Bowling Ball: RG 2.490, diff 0.052, mass bias Not listed at 15 lb
- Storm Gate Way Overseas Bowling Ball: RG 2.490, diff 0.052, mass bias Not listed at 15 lb
Balls with the Storm Ignition Core
1 of the 7 balls with the Storm Ignition Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Show 6 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Storm Top Gate Overseas Bowling Ball | Storm GI-18 Solid Reactive | December 2020 |
| Storm Power Gate Overseas Bowling Ball | Storm GI-20 Hybrid Reactive | August 2019 |
| Storm Gate 2 Overseas Bowling Ball | Not listed | January 2020 |
| Storm Nova Bowling Ball | Storm R2X Hybrid Reactive | December 2021 |
| Storm Super Nova Bowling Ball | Storm NeX Solid Reactive | September 2022 |
| Storm Gate Way Overseas Bowling Ball | Storm TX-22 Solid Reactive | August 2023 |
Where the Storm Ignition 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: 900 Global Ignition Core
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
Roto Grip | Asymmetric | 2.490 | 0.052 | Same RG and differential |
|
|
SWAG | Asymmetric | 2.490 | 0.052 | Same RG and differential |
|
|
Radical | Asymmetric | 2.490 | 0.051 | RG 0.000 · Diff −0.001 |
|
|
Roto Grip | Asymmetric | 2.490 | 0.053 | RG 0.000 · Diff +0.001 |
|
|
Hammer | Asymmetric | 2.489 | 0.053 | RG −0.001 · Diff +0.001 |
|
|
Storm | Asymmetric | 2.500 | 0.052 | RG +0.010 · Diff 0.000 |
Matches use 15 lb RG and differential.
Drilling and tools
Weight blocks like the Ignition Core rev up fast and finish strong with a more aggressive movement down lane. Need some extra oomph? Then look no further. The Ignition Core pumps out more than 6” of loaded flare potential! That’s more than enough differential to amp your adrenaline levels.
Questions bowlers ask
What is the RG of the Storm Ignition Core?
At 15 lb the Storm Ignition Core has an RG of 2.490. It ranges from 2.490 to 2.590 across the listed weights.
What is the 14 lb RG of the Storm Ignition Core?
At 14 lb the RG is 2.530.
What is the differential of the Storm Ignition Core?
At 15 lb the differential is 0.052. The mass bias is 0.019.
Which bowling balls use the Storm Ignition Core?
Storm Grand Gate Overseas Bowling Ball, Storm Top Gate Overseas Bowling Ball, Storm Power Gate Overseas Bowling Ball, Storm Gate 2 Overseas Bowling Ball, Storm Nova Bowling Ball. 1 are in stock now.
How do the Storm Ignition Core specs change by weight?
At 16 lb: RG 2.500, differential 0.051, mass bias 0.018. At 12 lb: RG 2.590, differential 0.029, mass bias 0.008.
How does the Storm Ignition 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 Ignition 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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