Bowling ball core · Storm

Storm Piston Core

The core inside the Storm Trend line

A symmetric core with mid-lane rev-up and medium flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.

  • Symmetric
  • RG 2.520
  • Diff 0.049
Storm Piston symmetric core shape inside the ball

Specs

RG AT 15 LB

2.520

Mid-lane rev-up

Revs soonerRevs later

61% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.049

Medium flare

Less flareMore flare

60% 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 Piston Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
16 lb 2.510 0.047 None
15 lbUsed on this page 2.520 0.049 None
14 lb 2.530 0.051 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 Piston 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 Trend?

Balls with the Storm Piston Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Radical Snapshot Bowling Ball

Radical Snapshot

Radical HK22C+ Pearl Reactive

Medium oil

Sale price $89.95 Regular price $259.95In stock
Brunswick Infinity Quest Pearl Bowling Ball

Brunswick Infinity Quest Pearl

Brunswick EVO Pearl HK22C Reactive

Medium to heavy oil

Sale price $169.95 Regular price $269.95In stock
Hammer Fallout Bowling Ball

Hammer Fallout

Hammer HK22 C2 Solid Reactive

Medium to heavy oil

Sale price $169.95 Regular price $269.95In stock
Storm Rocket AI Bowling Ball

Storm Rocket AI

Storm A1S Pearl Reactive

Medium oil

Sale price $154.95 Regular price $269.95In stock
SWAG Unknown Solid Bowling Ball

SWAG Unknown Solid

SWAG Mystery Solid AP26

Medium to heavy oil, medium oil

Sale price $149.95 Regular price $249.95In stock
SWAG Serpent Hybrid Bowling Ball

SWAG Serpent Hybrid

SWAG Serum AP26 Hybrid Reactive

Medium to heavy fresh oil

Sale price $159.95 Regular price $259.95In stock

Balls with the Storm Piston Core

None of the 5 balls with the Storm Piston Core are in stock at BowlersMart right now.

Show 5 balls no longer available at BowlersMart
More bowling balls with the Storm Piston Core
Ball Cover First seen
Storm Pro Motion Bowling Ball Storm SPEC Solid Reactive July 2019
Storm Trend Bowling Ball Storm R2S Pearl Reactive June 2020
Storm Pro Motion Tour Overseas Bowling Ball Storm R2X Solid Reactive December 2020
Storm Trend SE Overseas Bowling Ball Storm NeX Pearl Reactive September 2020
Storm Trend 2 X-Blem Bowling Ball Storm NRG Hybrid Reactive January 2022

Where the Storm Piston sits

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

Storm Element Tour A.I. Core, RG 2.470, diff 0.035DV8 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 0.055900 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 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 0.042Brunswick 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 0.051Storm Surge Core, RG 2.580, diff 0.024Roto 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 0.051Storm 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 0.050Hammer Super LED Core, RG 2.632, diff 0.034Ebonite 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 0.055Storm Radius Core, RG 2.610, diff 0.020Roto Grip Rondure Tour X Core, RG 2.480, diff 0.034SWAG 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 0.051Hammer Modified LED Core, RG 2.586, diff 0.027Epic 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 0.050Motiv Flux Core, RG 2.570, diff 0.015DV8 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 0.045900 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 0.036Hammer High Rev Offset Core, RG 2.489, diff 0.053Hammer Huntsman Tour Core, RG 2.472, diff 0.036Hammer LED Core, RG 2.650, diff 0.015Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Capacitor Core, RG 2.570, diff 0.022Radical Snapshot Symmetric Core (pictured: Radical Snapshot Bowling Ball)1Hammer Aftermath Core (pictured: Hammer Fallout Bowling Ball)2Brunswick Infinity Core (pictured: Brunswick Infinity Quest Pearl Bowling Ball)3SWAG Watcher Symmetric Core (pictured: SWAG Unknown Solid Bowling Ball)4KR Strikeforce Launch Core (pictured: KR Strikeforce Rise Red Black Pearl Bowling Ball)5SWAG Unreal Core (pictured: SWAG Unreal Bowling Ball)6Storm Piston Core (pictured: Storm Trend 2 X-Blem 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.

Same family: Storm Piston LD Core

This core 1 Nearest cores Other cores

Nearest cores to the Storm Piston Core
Core Brand Shape RG Diff vs this core
Radical Snapshot Bowling Ball1Radical Snapshot Symmetric CorePictured: Radical Snapshot
 Radical Symmetric 2.523 0.050 RG +0.003 · Diff +0.001
Hammer Fallout Bowling Ball2Hammer Aftermath CorePictured: Hammer Fallout
 Hammer Symmetric 2.520 0.052 RG 0.000 · Diff +0.003
Brunswick Infinity Quest Pearl Bowling Ball3Brunswick Infinity CorePictured: Brunswick Infinity Quest Pearl
 Brunswick Asymmetric 2.521 0.051 RG +0.001 · Diff +0.002
SWAG Unknown Solid Bowling Ball4SWAG Watcher Symmetric CorePictured: SWAG Unknown Solid
 SWAG Symmetric 2.510 0.048 RG −0.010 · Diff −0.001
KR Strikeforce Rise Red Black Pearl Bowling Ball5KR Strikeforce Launch CorePictured: KR Strikeforce Rise Red Black Pearl
 KR Strikeforce Symmetric 2.530 0.047 RG +0.010 · Diff −0.002
SWAG Unreal Bowling Ball6SWAG Unreal CorePictured: SWAG Unreal
 SWAG Symmetric 2.510 0.047 RG −0.010 · Diff −0.002

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 Piston CoreNone of the 5 balls with the Storm Piston Core are in stock at BowlersMart right now.Show 5 balls no longer available at BowlersMartMore bowling balls with the Storm Piston CoreBallCoverFirst seenStorm Pro Motion Bowling BallStorm SPEC Solid ReactiveJuly 2019Storm Trend Bowling BallStorm R2S Pearl ReactiveJune 2020Storm Pro Motion Tour Overseas Bowling BallStorm R2X Solid ReactiveDecember 2020Storm Trend SE Overseas Bowling BallStorm NeX Pearl ReactiveSeptember 2020Storm Trend 2 X-Blem Bowling BallStorm NRG Hybrid ReactiveJanuary 2022Where the Storm Piston 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 0.035900

From Storm’s description

Questions bowlers ask

What is the RG of the Storm Piston Core?

At 15 lb the Storm Piston Core has an RG of 2.520. It ranges from 2.510 to 2.650 across the listed weights.

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

At 14 lb the RG is 2.530.

What is the differential of the Storm Piston Core?

At 15 lb the differential is 0.049. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Storm Piston Core?

Storm Pro Motion Bowling Ball, Storm Trend Bowling Ball, Storm Pro Motion Tour Overseas Bowling Ball, Storm Trend SE Overseas Bowling Ball, Storm Trend 2 X-Blem Bowling Ball. 0 are in stock now.

Can I still buy a ball with the Storm Piston Core?

Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Radical Snapshot Bowling Ball, Brunswick Infinity Quest Pearl Bowling Ball, Hammer Fallout Bowling Ball, Storm Rocket AI Bowling Ball, SWAG Unknown Solid Bowling Ball, SWAG Serpent Hybrid Bowling Ball.

How do the Storm Piston Core specs change by weight?

At 16 lb: RG 2.510, differential 0.047. At 12 lb: RG 2.650, differential 0.035.

How does the Storm Piston 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 Piston 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.

Next lesson

Compare cores by RGEvery in-stock ball from lowest to highest RGCompare cores by differentialEvery in-stock ball from lowest to highest differentialAll bowling ball coresCore libraries for every brand we carryStorm core libraryEvery Storm core we have specs for