Bowling ball core · Track

Track MC2 Asym Core

The core inside the Track Theorem line

An asymmetric core with early rev-up and medium flare, built for medium to heavy oil. 2 of the 4 balls with this core are in stock at BowlersMart.

  • Asymmetric
  • RG 2.473
  • Diff 0.046
  • MB 0.017
Track MC2 Asym asymmetric core shape inside the ball

Specs

RG AT 15 LB

2.473

Early rev-up

Revs soonerRevs later

13% of the reactive and urethane balls we stock have a lower RG.

DIFFERENTIAL AT 15 LB

0.046

Medium flare

Less flareMore flare

46% 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.
Track MC2 Asym Core specs by ball weight (reference ball: Track Theorem Delta)
Weight RG DifferentialDiff Mass biasMB
16 lb 2.485 0.044 0.017
15 lbUsed on this page 2.473 0.046 0.017
14 lb 2.487 0.046 0.017
13 lb 2.597 0.041 0.014
12 lb 2.593 0.041 0.014

Source: Track published specs, as listed on the Track Theorem Delta 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 Track MC2 Asym Core

2 of the 4 balls with the Track MC2 Asym Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.

Hybrid covers

Hybrid covers mix solid grip with pearl length.

Track Theorem Delta Bowling Ball

Track Theorem Delta

Track Super Response Hybrid HK22 Reactive

Medium to heavy oil

Sale price $174.95 Regular price $279.95In stock

Pearl covers

Pearl covers go longer and turn harder at the end, best on medium oil.

Track Theorem Pearl Bowling Ball

Track Theorem Pearl

Track Prime Response Pearl Reactive

Medium oil

Sale price $109.95 Regular price $259.99In stock
Show 2 balls no longer available at BowlersMart
More bowling balls with the Track MC2 Asym Core
Ball Cover First seen
Track Theorem Solid Bowling Ball Track Super Response Reactive June 2025
Track Theorem Bowling Ball Track Prime Response Hybrid Reactive November 2023

Shop the 2 available balls with this core

Where the Track MC2 Asym 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 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 0.052Radical 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 0.038Roto 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 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 0.052Motiv Overload Core, RG 2.480, diff 0.050DV8 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 0.052Roto 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 0.044KR 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 0.036Hammer LED Core, RG 2.650, diff 0.015Storm Inverted Fe2 Core, RG 2.570, diff 0.046Storm Capacitor Core, RG 2.570, diff 0.022Motiv Sigma Core (pictured: Motiv Sigma Tour Pearl Bowling Ball)1Columbia 300 Pulse PowerCOR Core (pictured: Columbia 300 Pulse Bowling Ball)2Brunswick Zone Asymmetric Core (pictured: Brunswick Energize Bowling Ball)3Ebonite Enhanced V2 Core (pictured: Ebonite Game Breaker 5 GB5 Bowling Ball)4Hammer Spheroid Core (pictured: Hammer Hammerhead Pearl Bowling Ball)5Hammer Huntsman Core (pictured: Hammer Maximum Effect Bowling Ball)6Track MC2 Asym Core (pictured: Track Theorem Pearl 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: Track MC2 Core

This core 1 Nearest cores Other cores

Nearest cores to the Track MC2 Asym Core
Core Brand Shape RG Diff vs this core
Motiv Sigma Tour Pearl Bowling Ball1Motiv Sigma CorePictured: Motiv Sigma Tour Pearl
 Motiv Symmetric 2.470 0.047 RG −0.003 · Diff +0.001
Columbia 300 Pulse Bowling Ball2Columbia 300 Pulse PowerCOR CorePictured: Columbia 300 Pulse
 Columbia 300 Symmetric 2.468 0.045 RG −0.005 · Diff −0.001
Brunswick Energize Bowling Ball3Brunswick Zone Asymmetric CorePictured: Brunswick Energize
 Brunswick Asymmetric 2.478 0.048 RG +0.005 · Diff +0.002
Ebonite Game Breaker 5 GB5 Bowling Ball4Ebonite Enhanced V2 CorePictured: Ebonite Game Breaker 5 GB5
 Ebonite Symmetric 2.480 0.048 RG +0.007 · Diff +0.002
Hammer Hammerhead Pearl Bowling Ball5Hammer Spheroid CorePictured: Hammer Hammerhead Pearl
 Hammer Symmetric 2.480 0.048 RG +0.007 · Diff +0.002
Hammer Maximum Effect Bowling Ball6Hammer Huntsman CorePictured: Hammer Maximum Effect
 Hammer Asymmetric 2.470 0.050 RG −0.003 · Diff +0.004

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 Track MC2 Asym Core2 of the 4 balls with the Track MC2 Asym Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.Hybrid coversHybrid covers mix solid grip with pearl length.

From Track’s description

Questions bowlers ask

What is the RG of the Track MC2 Asym Core?

At 15 lb the Track MC2 Asym Core has an RG of 2.473. It ranges from 2.473 to 2.597 across the listed weights.

What is the 14 lb RG of the Track MC2 Asym Core?

At 14 lb the RG is 2.487.

What is the differential of the Track MC2 Asym Core?

At 15 lb the differential is 0.046. The mass bias is 0.017.

Which bowling balls use the Track MC2 Asym Core?

Track Theorem Delta Bowling Ball, Track Theorem Pearl Bowling Ball, Track Theorem Solid Bowling Ball, Track Theorem Bowling Ball. 2 are in stock now.

How do the Track MC2 Asym Core specs change by weight?

At 16 lb: RG 2.485, differential 0.044, mass bias 0.017. At 12 lb: RG 2.593, differential 0.041, mass bias 0.014.

How does the Track MC2 Asym 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. Track published specs, as listed on the Track Theorem Delta 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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