Bowling ball core · Roto Grip

Roto Grip Momentous A.I. Core

The core inside the Roto Grip Attention line

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

  • Asymmetric
  • RG 2.480
  • Diff 0.049
  • MB 0.017
Roto Grip Momentous A.I. symmetric core shape inside the ball

Specs

RG AT 15 LB

2.480

Early rev-up

Revs soonerRevs later

15% 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

0.017

Medium asymmetry

MilderStronger

54% of the asymmetric reactive and urethane balls we stock have a lower mass bias.

RG How soon the ball revs up.Differential How much the ball can flare.Mass bias How asymmetric the core is.
Roto Grip Momentous A.I. Core specs by ball weight
Weight RG DifferentialDiff Mass biasMB
15 lbUsed on this page 2.480 0.049 0.017

Other weights are not in our catalog for this core.

Looking for a ball like your Attention?

Balls with the Roto Grip Momentous A.I. Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Ebonite Game Breaker 5 Hybrid Bowling Ball

Ebonite Game Breaker 5 Hybrid

Ebonite GB 12.7 Hybrid Reactive

Medium to heavy oil

Sale price $144.95 Regular price $229.95In stock
Motiv Evoke Mayhem Bowling Ball

Motiv Evoke Mayhem

Motiv Propulsion MXV Reactive

Medium to heavy oil

Sale price $204.95 Regular price $289.95In stock
Hammer Hammerhead Pearl Bowling Ball

Hammer Hammerhead Pearl

Hammer Aggression Pearl Reactive

Medium oil

Sale price $149.95 Regular price $249.95In stock
900 Global Origin EX Bowling Ball

900 Global Origin EX

900 Global RB 89 Solid Reactive

Medium to heavy oil

Sale price $109.95 Regular price $299.95In stock
Roto Grip Rockstar Amped Bowling Ball

Roto Grip Rockstar Amped

Roto Grip Nanostar Pearl Reactive

Medium to heavy oil

Sale price $104.95 Regular price $249.95In stock
Storm Phaze 2 Pearl Bowling Ball

Storm Phaze 2 Pearl

Storm TX-25 Pearl Reactive

Medium to heavy oil

Sale price $184.95 Regular price $249.95In stock

Balls with the Roto Grip Momentous A.I. Core

None of the 4 balls with the Roto Grip Momentous A.I. Core are in stock at BowlersMart right now.

Show 4 balls no longer available at BowlersMart
More bowling balls with the Roto Grip Momentous A.I. Core
Ball Cover First seen
Roto Grip Attention Star S2 Bowling Ball Roto Grip eTrax Plus Hybrid Reactive October 2024
Roto Grip Attention Line Overseas Bowling Ball Roto Grip OptiTrax Solid Reactive November 2024
Roto Grip Attention Star Bowling Ball Roto Grip eTrax Plus Pearl Reactive February 2024
Roto Grip Attention Power Overseas Bowling Ball Reactive April 2025

Where the Roto Grip Momentous A.I. 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 0.051Storm 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 0.051Brunswick 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 0.050Hammer Super LED Core, RG 2.632, diff 0.034DV8 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 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 0.052DV8 Duality Core, RG 2.480, diff 0.036Radical 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 0.047Ebonite Entity Core, RG 2.515, diff 0.052Motiv 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 0.045KR Strikeforce Launch Core, RG 2.530, diff 0.047Motiv 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 0.036Hammer LED Core, RG 2.650, diff 0.015Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Capacitor Core, RG 2.570, diff 0.022900 Global Ellipse Asymmetric A.I. Core (pictured: 900 Global Origin EX Bowling Ball)1Motiv Overload Core (pictured: Motiv Evoke Hysteria Bowling Ball)2Ebonite Enhanced V2 Core (pictured: Ebonite Game Breaker 5 GB5 Bowling Ball)3Hammer Spheroid Core (pictured: Hammer Hammerhead Pearl Bowling Ball)4Roto Grip Rocker A.I. Core (pictured: Roto Grip Rockstar Amped Bowling Ball)5Brunswick Zone Asymmetric Core (pictured: Brunswick Energize Bowling Ball)6Roto Grip Momentous A.I. Core (pictured: Roto Grip Attention Star S2 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 Roto Grip Momentous A.I. Core
Core Brand Shape RG Diff vs this core
900 Global Origin EX Bowling Ball1900 Global Ellipse Asymmetric A.I. CorePictured: 900 Global Origin EX
 900 Global Asymmetric 2.480 0.050 RG 0.000 · Diff +0.001
Motiv Evoke Hysteria Bowling Ball2Motiv Overload CorePictured: Motiv Evoke Hysteria
 Motiv Asymmetric 2.480 0.050 RG 0.000 · Diff +0.001
Ebonite Game Breaker 5 GB5 Bowling Ball3Ebonite Enhanced V2 CorePictured: Ebonite Game Breaker 5 GB5
 Ebonite Symmetric 2.480 0.048 RG 0.000 · Diff −0.001
Hammer Hammerhead Pearl Bowling Ball4Hammer Spheroid CorePictured: Hammer Hammerhead Pearl
 Hammer Symmetric 2.480 0.048 RG 0.000 · Diff −0.001
Roto Grip Rockstar Amped Bowling Ball5Roto Grip Rocker A.I. CorePictured: Roto Grip Rockstar Amped
 Roto Grip Symmetric 2.480 0.050 RG 0.000 · Diff +0.001
Brunswick Energize Bowling Ball6Brunswick Zone Asymmetric CorePictured: Brunswick Energize
 Brunswick Asymmetric 2.478 0.048 RG −0.002 · Diff −0.001

Matches use 15 lb RG and differential.

Drilling and tools

Drilling layoutsLayout guides for symmetric and asymmetric ballsDual angle converterTurn a pin to PAP layout into a dual angle layout

Turn on JavaScript to compare with your ball.Balls with the Roto Grip Momentous A.I. CoreNone of the 4 balls with the Roto Grip Momentous A.I. Core are in stock at BowlersMart right now.Show 4 balls no longer available at BowlersMartMore bowling balls with the Roto Grip Momentous A.I. CoreBallCoverFirst seenRoto Grip Attention Star S2 Bowling BallRoto Grip eTrax Plus Hybrid ReactiveOctober 2024Roto Grip Attention Line Overseas Bowling BallRoto Grip OptiTrax Solid ReactiveNovember 2024Roto Grip Attention Star Bowling BallRoto Grip eTrax Plus Pearl ReactiveFebruary 2024Roto Grip Attention Power Overseas Bowling BallReactiveApril 2025Where the Roto Grip Momentous A.I. sitsEach dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.All coresSymmetricAsymmetricRoto Grip 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 0.055900 Global Condu

From Roto Grip’s description

Questions bowlers ask

What is the RG of the Roto Grip Momentous A.I. Core?

At 15 lb the Roto Grip Momentous A.I. Core has an RG of 2.480. Other weights are not in our catalog for this core.

What is the differential of the Roto Grip Momentous A.I. Core?

At 15 lb the differential is 0.049. The mass bias is 0.017.

Which bowling balls use the Roto Grip Momentous A.I. Core?

Roto Grip Attention Star S2 Bowling Ball, Roto Grip Attention Line Overseas Bowling Ball, Roto Grip Attention Star Bowling Ball, Roto Grip Attention Power Overseas Bowling Ball. 0 are in stock now.

Can I still buy a ball with the Roto Grip Momentous A.I. Core?

Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Ebonite Game Breaker 5 Hybrid Bowling Ball, Motiv Evoke Mayhem Bowling Ball, Hammer Hammerhead Pearl Bowling Ball, 900 Global Origin EX Bowling Ball, Roto Grip Rockstar Amped Bowling Ball, Storm Phaze 2 Pearl Bowling Ball.

How do the Roto Grip Momentous A.I. Core specs change by weight?

Other weights are not in our catalog for this core.

How does the Roto Grip Momentous A.I. 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. Catalog 15 lb figure.

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 carryRoto Grip core libraryEvery Roto Grip core we have specs for