Bowling ball core · Storm

Storm Radius Core

The core inside the Storm Concept line

A symmetric core with later rev-up, more length and low flare, built for medium oil. 1 of the 3 balls with this core are in stock at BowlersMart.

  • Symmetric
  • RG 2.610
  • Diff 0.020
Storm Radius symmetric core shape inside the ball

Specs

RG AT 15 LB

2.610

Later rev-up, more length

Revs soonerRevs later

98% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.020

Low flare

Less flareMore flare

1% 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.

RG How soon the ball revs up.Differential How much the ball can flare.Mass bias How asymmetric the core is.
Storm Radius Core specs by ball weight (reference ball: Storm Concept)
Weight RG DifferentialDiff Mass biasMB
16 lb 2.590 0.019 None
15 lbUsed on this page 2.610 0.020 None
14 lb 2.620 0.019 None
13 lb 2.630 0.009 None
12 lb 2.650 0.011 None

Source: Storm published specs, as listed on the Concept product page. 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.

Balls with the Storm Radius Core

1 of the 3 balls with the Storm Radius Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Storm Concept Bowling Ball

Storm Concept

Storm ARC Pearl Reactive

Medium oil

Sale price $199.95 Regular price $279.95In stock
Show 2 balls no longer available at BowlersMart
More bowling balls with the Storm Radius Core
Ball Cover First seen
Storm Concept X-Comp Bowling Ball Storm ARC Pearl Reactive June 2026
Storm Concept Purple Bowling Ball Storm ARC Pearl Reactive June 2026

Shop the 1 available balls with this core

Where the Storm Radius sits

Each dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.

DV8 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 0.035900 Global Conduit A.I. Core, RG 2.590, diff 0.050Roto Grip GEM A.I. Core, RG 2.490, diff 0.057Hammer Obsession Tour Core, RG 2.469, diff 0.034Hammer Super Offset Core, RG 2.524, diff 0.053Hammer Gas Mask Core, RG 2.500, diff 0.058Ebonite Turbo Core, RG 2.517, diff 0.040Ebonite Centrex Symmetrical Mass Bias Core, RG 2.466, diff 0.056Motiv Excel Core, RG 2.550, diff 0.030Motiv Detonator Core, RG 2.470, diff 0.055Storm Solarion A.I. Core, RG 2.480, diff 0.054SWAG Insanity Symmetric Core, RG 2.520, diff 0.034SWAG Fusion Core, RG 2.540, diff 0.036SWAG Watcher Symmetric Core, RG 2.510, diff 0.048SWAG Dragon Asymmetric Core, RG 2.490, diff 0.050SWAG Executioner Asymmetric Core, RG 2.500, diff 0.051Motiv Predator V2 Core, RG 2.470, diff 0.054Storm C3 Centripetal Control Core, RG 2.490, diff 0.029Roto Grip Rondure MaxD Core, RG 2.500, diff 0.058Hammer Vibe Core, RG 2.510, diff 0.042Hammer Aftermath Core, RG 2.520, diff 0.052Brunswick Alert Core, RG 2.478, diff 0.037Brunswick Rampart Core, RG 2.502, diff 0.051DV8 Collision Core, RG 2.462, diff 0.052Track MC2 Asym Core, RG 2.473, diff 0.046Radical Evil Eye Symmetric Core, RG 2.495, diff 0.046Ebonite Iron Fist V2 Core, RG 2.473, diff 0.053Radical No Doubt Symmetric Core, RG 2.485, diff 0.051Roto Grip Hyped UP Core, RG 2.500, diff 0.042Roto Grip Morph-Wing Core, RG 2.510, diff 0.051Brunswick Fury Core, RG 2.524, diff 0.038Motiv Sigma Core, RG 2.470, diff 0.047Roto Grip Hustle Core, RG 2.530, diff 0.030900 Global Blast A.I. Core, RG 2.470, diff 0.055900 Global Strobe A.I. Core, RG 2.510, diff 0.052Radical Guru Core, RG 2.503, diff 0.044Track I-CORE 3.0, RG 2.486, diff 0.056DV8 Unholy Core, RG 2.504, diff 0.051Brunswick Infinity Core, RG 2.521, diff 0.051Storm Catalyst A.I. Core, RG 2.480, diff 0.053Hammer Gauntlet Core, RG 2.501, diff 0.050Hammer Raw Hammer Core, RG 2.537, diff 0.038Storm Atmos A.I. Core, RG 2.530, diff 0.042Storm Booster Core, RG 2.540, diff 0.046Track Shuttle Core, RG 2.480, diff 0.040Brunswick Light Bulb Core, RG 2.524, diff 0.030Radical Sneak Attack Core, RG 2.544, diff 0.036Motiv Gear Core, RG 2.480, diff 0.034Hammer Huntsman Core, RG 2.470, diff 0.050Ebonite Enhanced V2 Core, RG 2.480, diff 0.048DV8 Dualistic Core, RG 2.496, diff 0.045Radical Vexed Asymmetric Core, RG 2.498, diff 0.036Motiv Quadfire Core, RG 2.550, diff 0.043Track Stealth Core, RG 2.482, diff 0.056Brunswick Tiered Hexagon Core, RG 2.540, diff 0.045Columbia 300 Piranha Core, RG 2.554, diff 0.043Storm Torsion A.I. Core, RG 2.470, diff 0.050Storm Element Max A.I. Core, RG 2.470, diff 0.055Roto Grip Rondure Tour X Core, RG 2.480, diff 0.034SWAG Unreal Core, RG 2.510, diff 0.047SWAG Craze Core, RG 2.520, diff 0.030SWAG Serpent Asymmetric Core, RG 2.510, diff 0.048Radical Torpedo Asymmetric Core, RG 2.480, diff 0.052Motiv Overload Core, RG 2.480, diff 0.050DV8 Duality Core, RG 2.480, diff 0.036Hammer Spheroid Core, RG 2.480, diff 0.048Radical Outer Limits Asymmetric Core, RG 2.499, diff 0.051Motiv Apex Predator Core, RG 2.520, diff 0.055Brunswick Danger Zone Core, RG 2.501, diff 0.048Storm RAD-TQ Core, RG 2.560, diff 0.051Storm Velocity Core, RG 2.480, diff 0.051Epic Spark Core, RG 2.540, diff 0.049Motiv Hadron Dual Density Core, RG 2.500, diff 0.045Track Criterion ID Core, RG 2.496, diff 0.047Brunswick Zone Asymmetric Core, RG 2.478, diff 0.048Ebonite Entity Core, RG 2.515, diff 0.052Roto Grip Rocker A.I. Core, RG 2.480, diff 0.050DV8 Mantra Core, RG 2.498, diff 0.047Hammer Gas Mask Low Diff Core, RG 2.500, diff 0.034Roto Grip RST A.I. Core, RG 2.520, diff 0.055Motiv Impulse V2 Core, RG 2.550, diff 0.050SWAG APX V1 Core, RG 2.500, diff 0.042SWAG Judge Core, RG 2.490, diff 0.052900 Global Magna A.I. Core, RG 2.490, diff 0.044Columbia 300 Pulse PowerCOR Core, RG 2.468, diff 0.045KR Strikeforce Launch Core, RG 2.530, diff 0.047900 Global Ellipse Asymmetric A.I. Core, RG 2.480, diff 0.050Motiv Halogen Core, RG 2.550, diff 0.037Storm C3 A.I. Core, RG 2.480, diff 0.031Motiv Gear APG Core, RG 2.470, diff 0.036Radical Snapshot Symmetric Core, RG 2.523, diff 0.050Hammer High Rev Offset Core, RG 2.489, diff 0.053Hammer Huntsman Tour Core, RG 2.472, diff 0.036Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Surge Core (pictured: Storm Tropical Surge Pink Purple Bowling Ball)1Hammer Modified LED Core (pictured: Hammer NU 2.0 Hammer Bowling Ball)2Storm Capacitor Core (pictured: Storm Pitch Black Bowling Ball)3Motiv Flux Core (pictured: Motiv Shadow Tank Bowling Ball)4Hammer LED Core (pictured: Hammer Purple Pearl Urethane Bowling Ball)5Hammer Super LED Core (pictured: Hammer Purple Pearl Urethane 78D Bowling Ball)6Storm Radius Core (pictured: Storm Concept Bowling Ball)EARLY REV-UPMID-LANELATER REV-UPHIGH FLAREMEDIUMLOW FLARE2.442.482.522.562.602.642.680.0100.0200.0300.0400.0500.060RG at 15 lbDifferential at 15 lb← Revs up soonerRevs up later →More flare ↑Less flare ↓

Nearest cores, zoomed in

Hover or tap a dot for that core’s numbers. Click a dot to open its page. Drag to move around when zoomed in. The same RG and differential do not guarantee the same ball motion.

This core 1 Nearest cores Other cores

Nearest cores to the Storm Radius Core
Core Brand Shape RG Diff vs this core
Storm Tropical Surge Pink Purple Bowling Ball1Storm Surge CorePictured: Storm Tropical Surge Pink Purple
 Storm Symmetric 2.580 0.024 RG −0.030 · Diff +0.004
Hammer NU 2.0 Hammer Bowling Ball2Hammer Modified LED CorePictured: Hammer NU 2.0 Hammer
 Hammer Symmetric 2.586 0.027 RG −0.024 · Diff +0.007
Storm Pitch Black Bowling Ball3Storm Capacitor CorePictured: Storm Pitch Black
 Storm Symmetric 2.570 0.022 RG −0.040 · Diff +0.002
Motiv Shadow Tank Bowling Ball4Motiv Flux CorePictured: Motiv Shadow Tank
 Motiv Symmetric 2.570 0.015 RG −0.040 · Diff −0.005
Hammer Purple Pearl Urethane Bowling Ball5Hammer LED CorePictured: Hammer Purple Pearl Urethane
 Hammer Symmetric 2.650 0.015 RG +0.040 · Diff −0.005
Hammer Purple Pearl Urethane 78D Bowling Ball6Hammer Super LED CorePictured: Hammer Purple Pearl Urethane 78D
 Hammer Symmetric 2.632 0.034 RG +0.022 · Diff +0.014

Matches use 15 lb RG and differential.

Drilling and tools

Storm drill sheetsLayout guides for symmetric and asymmetric ballsDual angle converterTurn a pin to PAP layout into a dual angle layoutStorm layout adapterAdapt a VLS layout for speed, rev rate and axis rotation

Turn on JavaScript to compare with your ball.Balls with the Storm Radius Core1 of the 3 balls with the Storm Radius Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

From Storm’s description

Questions bowlers ask

What is the RG of the Storm Radius Core?

At 15 lb the Storm Radius Core has an RG of 2.610. It ranges from 2.590 to 2.650 across the listed weights.

What is the 14 lb RG of the Storm Radius Core?

At 14 lb the RG is 2.620.

What is the differential of the Storm Radius Core?

At 15 lb the differential is 0.020. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Storm Radius Core?

Storm Concept Bowling Ball, Storm Concept X-Comp Bowling Ball, Storm Concept Purple Bowling Ball. 1 are in stock now.

How do the Storm Radius Core specs change by weight?

At 16 lb: RG 2.590, differential 0.019. At 12 lb: RG 2.650, differential 0.011.

How does the Storm Radius 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 listed on the Concept product page, 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.

Next lesson

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