Bowling ball core · Motiv

Motiv Cruel Core

Symmetric Motiv core

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

  • Symmetric
  • RG 2.470
  • Diff 0.055
Motiv Cruel symmetric core shape inside the ball

Specs

RG AT 15 LB

2.470

Early rev-up

Revs soonerRevs later

2% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.055

High flare

Less flareMore flare

88% 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.
Motiv Cruel Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
16 lb 2.470 0.054 None
15 lbUsed on this page 2.470 0.055 None
14 lb 2.490 0.054 None
13 lb 2.550 0.045 None
12 lb 2.620 0.032 None

Source: Motiv published specs, as shown on BowlersMart’s original Motiv Cruel 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 Motiv Cruel?

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

Motiv Forge Fuel Bowling Ball

Motiv Forge Fuel

Motiv Leverage MXT Solid Reactive

Medium to heavy oil

Sale price $204.95 Regular price $289.95In stock
900 Global Vengeance Returns Bowling Ball

900 Global Vengeance Returns

900 Global RB 91 Hybrid Reactive

Medium to heavy oil

Sale price $184.95 Regular price $299.95In stock
Storm Ion Max Pearl Bowling Ball

Storm Ion Max Pearl

Storm NRG Pearl Reactive

Medium to heavy oil

Sale price $189.95 Regular price $249.95In stock
Storm PhysiX Blackout Bowling Ball

Storm PhysiX Blackout

Storm NeX Pearl Reactive

Heavy oil

Sale price $149.95 Regular price $279.95In stock
Hammer Hazmat Solid Bowling Ball

Hammer Hazmat Solid

Hammer Semtex Solid Reactive

Medium to heavy oil

Sale price $109.95 Regular price $279.95In stock
Motiv Jackal Ghost V2 Bowling Ball

Motiv Jackal Ghost V2

Motiv Leverage HFS Reactive

Heavy oil, medium to heavy oil

Sale price $219.95 Regular price $289.95In stock

Balls with the Motiv Cruel Core

None of the 2 balls with the Motiv Cruel Core are in stock at BowlersMart right now.

Show 2 balls no longer available at BowlersMart
More bowling balls with the Motiv Cruel Core
Ball Cover First seen
Motiv Cruel C51 LE Bowling Ball Motiv Formula-5 Hybrid Reactive March 2018
Motiv Cruel C51 Bowling Ball Motiv Formula-5 Hybrid Reactive March 2019

Where the Motiv Cruel 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 2.500, 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, 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 2.510, diff 0.040Ebonite Centrex Symmetrical Mass Bias, RG 2.460, diff 0.056Motiv Excel Core, RG 2.550, diff 0.030Storm Solarion AI Core, RG 2.480, diff 0.054SWAG Insanity Symmetric Core, RG 2.520, diff 0.034SWAG Fusion Symmetric Core, RG 2.540, diff 0.036SWAG Watcher Symmetric Core, RG 2.510, diff 0.048SWAG Dragon Asymmetric Core, RG 2.480, diff 0.054SWAG Executioner Asymmetric Core, RG 2.500, diff 0.051Storm 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 2.470, diff 0.046Radical Evil Eye Symmetric Core, RG 2.490, diff 0.046Ebonite Iron Fist V2 Core, RG 2.470, diff 0.053Radical No Doubt Symmetric Core, RG 2.480, 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 Strobe AI Core, RG 2.510, diff 0.052Radical Guru Core, RG 2.500, diff 0.044Track I-CORE 3.0, RG 2.480, diff 0.056DV8 Unholy Core, RG 2.500, diff 0.051Brunswick Infinity Core, RG 2.521, diff 0.051Storm Catalyst Core, RG 2.500, diff 0.052Hammer 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 2.490, diff 0.038Brunswick Light Bulb Core, RG 2.524, diff 0.030Radical Sneak Attack Core, RG 2.540, 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 2.490, diff 0.045Radical Vexed Asymmetric Core, RG 2.490, diff 0.036Motiv Quadfire Core, RG 2.550, diff 0.043Track Stealth Core, RG 2.480, diff 0.056Brunswick Tiered Hexagon Core, RG 2.540, diff 0.045Columbia 300 Piranha Core, RG 2.550, diff 0.043Storm Torsion AI Core, RG 2.470, diff 0.050Storm Radius Core, RG 2.610, diff 0.020Roto 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 0.054Motiv Overload, 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, RG 2.490, 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 LED Resin Bowling Ball 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 2.490, diff 0.047Brunswick Zone Asymmetric Core, RG 2.478, diff 0.048Ebonite Entity Core, RG 2.510, diff 0.052Roto Grip Rocker AI Core, RG 2.480, diff 0.050Motiv Flux Core, RG 2.570, diff 0.015DV8 Mantra Core, RG 2.490, diff 0.047Hammer Gas Mask Low Diff Core, RG 2.500, diff 0.034Roto Grip RST Core + AI, RG 2.520, diff 0.055Motiv Impulse V2 Core, RG 2.550, diff 0.050SWAG APX V1 Core, RG 2.500, diff 0.042SWAG Fusion Core, RG 2.540, diff 0.036SWAG Judge Core, RG 2.490, diff 0.052900 Global Magna AI Core, RG 2.490, diff 0.044Roto Grip Rondure Core, RG 2.490, diff 0.052Columbia 300 Pulse PowerCOR, RG 2.460, diff 0.045Storm Element Tour A.I. Core, RG 2.470, diff 0.035KR Strikeforce KR 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 + AI Core, RG 2.480, diff 0.031Motiv Gear APG, RG 2.470, diff 0.036Radical Snapshot Symmetric Core, RG 2.520, diff 0.050Hammer 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 0.022Storm Atomic Core, RG 2.480, diff 0.053Storm RAD-X Asymmetric, RG 2.480, diff 0.054Storm ID AI Core, RG 2.510, diff 0.055Hammer FAB Asymmetric, RG 2.550, diff 0.051Columbia 300 Shifter Core, RG 2.470, diff 0.050Radical Modified Intel Symmetric, RG 2.480, diff 0.032Columbia 300 Columbia Ricochet Core, RG 2.480, diff 0.054Roto Grip Defense AI Core, RG 2.490, diff 0.053Storm Supercoil Core, RG 2.470, diff 0.053Storm Centripetal HD A.I. Core, RG 2.460, diff 0.056Hammer Modified Infamous Core, RG 2.567, diff 0.049Brunswick Ethos Core, RG 2.480, diff 0.053Track Criterion MD Core, RG 2.500, diff 0.052Storm Ignition Core, RG 2.490, diff 0.052Roto Grip Momentous A.I. Core, RG 2.480, diff 0.049Brunswick Portal X Core, RG 2.473, diff 0.054Ebonite Emerge Core, RG 2.510, diff 0.053Radical Katana Core, RG 2.500, diff 0.050900 Global Meditate LD Symmetric Core, RG 2.560, diff 0.027Columbia 300 Movement Core, RG 2.510, diff 0.053900 Global Blast AI Core (pictured: 900 Global Vengeance Bowling Ball)1Motiv Detonator Core (pictured: Motiv Subzero Forge Bowling Ball)2Hammer Hazmat Core (pictured: Hammer Hazmat Solid Bowling Ball)3Storm Element Max AI Core (pictured: Storm Ion Max Bowling Ball )4Motiv Predator V2 Core (pictured: Motiv Jackal Onyx Bowling Ball)5Storm Velocity A.I. Core (pictured: Storm Phaze AI Bowling Ball)6Motiv Cruel Core (pictured: Motiv Cruel C51 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 Motiv Cruel Core
Core Brand Shape RG Diff vs this core
900 Global Vengeance Bowling Ball1900 Global Blast AI CorePictured: 900 Global Vengeance
 900 Global Symmetric 2.470 0.055 Same RG and differential
Motiv Subzero Forge Bowling Ball2Motiv Detonator CorePictured: Motiv Subzero Forge
 Motiv Symmetric 2.470 0.055 Same RG and differential
Hammer Hazmat Solid Bowling Ball3Hammer Hazmat CorePictured: Hammer Hazmat Solid
 Hammer Symmetric 2.470 0.055 Same RG and differential
Storm Ion Max Bowling Ball 4Storm Element Max AI CorePictured: Storm Ion Max Bowling Ball 
 Storm Asymmetric 2.470 0.055 Same RG and differential
Motiv Jackal Onyx Bowling Ball5Motiv Predator V2 CorePictured: Motiv Jackal Onyx
 Motiv Asymmetric 2.470 0.054 RG 0.000 · Diff −0.001
Storm Phaze AI Bowling Ball6Storm Velocity A.I. CorePictured: Storm Phaze AI
 Storm Symmetric 2.470 0.053 RG 0.000 · Diff −0.002

Matches use 15 lb RG and differential.

Drilling and tools

Motiv drill sheetsLayout guides for symmetric and asymmetric ballsDual angle converterTurn a pin to PAP layout into a dual angle layout

The Cruel core is the first asymmetric design from MOTIV and it is crazy aggressive.  The specs are completely maxed out.  The 15# C51 has a 2.48 RG, a .060 primary diff, and a .030 mass bias differential.  (That’s insane!) The Reverb outer core is a low-density polyester resin with pin piercing hardness and strength.  Rather than absorb impact energy, this outer core reverberates energy as it explodes through the pins. 

From Motiv’s description

Questions bowlers ask

What is the RG of the Motiv Cruel Core?

At 15 lb the Motiv Cruel Core has an RG of 2.470. It ranges from 2.470 to 2.620 across the listed weights.

What is the 14 lb RG of the Motiv Cruel Core?

At 14 lb the RG is 2.490.

What is the differential of the Motiv Cruel Core?

At 15 lb the differential is 0.055. This is a symmetric core, so mass bias is not applicable.

Which bowling balls use the Motiv Cruel Core?

Motiv Cruel C51 LE Bowling Ball, Motiv Cruel C51 Bowling Ball. 0 are in stock now.

Can I still buy a ball with the Motiv Cruel Core?

Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Motiv Forge Fuel Bowling Ball, 900 Global Vengeance Returns Bowling Ball, Storm Ion Max Pearl Bowling Ball, Storm PhysiX Blackout Bowling Ball, Hammer Hazmat Solid Bowling Ball, Motiv Jackal Ghost V2 Bowling Ball.

How do the Motiv Cruel Core specs change by weight?

At 16 lb: RG 2.470, differential 0.054. At 12 lb: RG 2.620, differential 0.032.

How does the Motiv Cruel 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. Motiv published specs, as shown on BowlersMart’s original Motiv Cruel 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.

Next lesson

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