Bowling ball core · Motiv
Motiv Top Gear Core
Symmetric Motiv core
A symmetric core with early rev-up and low flare, built for dry to medium oil. Balls with this core are no longer available at BowlersMart.
- Symmetric
- RG 2.470
- Diff 0.035

Specs
RG AT 15 LB
2.470
Early rev-up
2% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.035
Low flare
21% 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.
| Weight | RG | DifferentialDiff | Mass biasMB |
|---|---|---|---|
| 16 lb | 2.470 | 0.031 | None |
| 15 lbUsed on this page | 2.470 | 0.035 | None |
| 14 lb | 2.500 | 0.039 | None |
| 13 lb | 2.570 | 0.024 | None |
| 12 lb | 2.630 | 0.027 | None |
Source: Motiv published specs, as shown on BowlersMart’s original Motiv Top Gear 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 Top Gear?
Balls with the Motiv Top Gear Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Storm TX-16 Solid Reactive
Medium to heavy oil

Motiv Leverage MXC
Dry to medium oil

Hammer TourV3 Reactive
Medium to heavy oil

Hammer C2 Tour Edition Solid Reactive
Medium to heavy oil

Brunswick Savvy Solid Reactive
Medium to heavy oil

DV8 Inciter Solid Reactive
Medium oil
Balls with the Motiv Top Gear Core
None of the 2 balls with the Motiv Top Gear Core are in stock at BowlersMart right now.
Show 2 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Motiv Venom Cobra Bowling Ball | Motiv Sabotage Hybrid Reactive | March 2016 |
| Motiv Venom Shock Pearl Bowling Ball | Motiv Hexion MFP (Medium Friction Pearl) Pearl Reactive | January 2018 |
Where the Motiv Top Gear sits
Each dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
Nearest cores, zoomed in
Navy ring = a ball in your bag. Dashed ring = off this chart, or this same core.
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
Storm | Asymmetric | 2.470 | 0.035 | Same RG and differential |
|
|
Motiv | Asymmetric | 2.470 | 0.036 | RG 0.000 · Diff +0.001 |
|
|
Hammer | Asymmetric | 2.469 | 0.034 | RG −0.001 · Diff −0.001 |
|
|
Hammer | Asymmetric | 2.472 | 0.036 | RG +0.002 · Diff +0.001 |
|
|
Brunswick | Symmetric | 2.478 | 0.037 | RG +0.008 · Diff +0.002 |
|
|
DV8 | Symmetric | 2.480 | 0.036 | RG +0.010 · Diff +0.001 |
Matches use 15 lb RG and differential.
Drilling and tools
Turn on JavaScript to compare with your ball.Balls with the Motiv Top Gear CoreNone of the 2 balls with the Motiv Top Gear Core are in stock at BowlersMart right now.Show 2 balls no longer available at BowlersMartMore bowling balls with the Motiv Top Gear CoreBallCoverFirst seenMotiv Venom Cobra Bowling BallMotiv Sabotage Hybrid ReactiveMarch 2016Motiv Venom Shock Pearl Bowling BallMotiv Hexion MFP (Medium Friction Pearl) Pearl ReactiveJanuary 2018Where the Motiv Top Gear sitsEach dot is a core in balls we stock. Cores close together roll alike; the cover and layout decide the rest.All coresSymmetricAsymmetricMotiv 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 Conduit A.I. Core, RG 2.590, diff 0.050Roto Grip GEM A.I. Core, RG 2.490, diff 0.057Hammer Super Offset Core, RG 2.524, diff 0.053Hammer Gas Mask Core, RG 2.500, diff 0.058Ebonite Turbo Core, RG 2.517, diff
Questions bowlers ask
What is the RG of the Motiv Top Gear Core?
At 15 lb the Motiv Top Gear Core has an RG of 2.470. It ranges from 2.470 to 2.630 across the listed weights.
What is the 14 lb RG of the Motiv Top Gear Core?
At 14 lb the RG is 2.500.
What is the differential of the Motiv Top Gear Core?
At 15 lb the differential is 0.035. This is a symmetric core, so mass bias is not applicable.
Which bowling balls use the Motiv Top Gear Core?
Motiv Venom Cobra Bowling Ball, Motiv Venom Shock Pearl Bowling Ball. 0 are in stock now.
Can I still buy a ball with the Motiv Top Gear Core?
Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Storm Ion Pro Solid Bowling Ball, Motiv Lethal Venom Bowling Ball, Hammer Effect Tour Bowling Ball, Hammer Zero Mercy Tour Bowling Ball, Brunswick Alert Bowling Ball, DV8 Dark Side Curse Bowling Ball.
How do the Motiv Top Gear Core specs change by weight?
At 16 lb: RG 2.470, differential 0.031. At 12 lb: RG 2.630, differential 0.027.
How does the Motiv Top Gear 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 Top Gear core page (2022), as published by the manufacturer.
Baseline. The baseline is 211 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.


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