Bowling ball core · Motiv
Motiv Gear Core
Symmetric Motiv core
A symmetric core with early rev-up and low flare, built for dry to medium oil. 3 of the 8 balls with this core are in stock at BowlersMart.
- Symmetric
- RG 2.480
- Diff 0.034

Specs
RG AT 15 LB
2.480
Early rev-up
15% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.034
Low flare
17% 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 | 2.480 | 0.031 | None |
| 15 lbUsed on this page | 2.480 | 0.034 | None |
| 14 lb | 2.520 | 0.029 | None |
| 13 lb | 2.580 | 0.023 | None |
| 12 lb | 2.650 | 0.016 | None |
Source: Motiv published specs, as shown on BowlersMart’s original Motiv 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.
Balls with the Motiv Gear Core
3 of the 8 balls with the Motiv Gear Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.
Solid covers
Solid covers grip the lane soonest and suit heavier oil.

Motiv Turmoil MFS (Medium Friction Solid) Reactive
Dry to medium oil
Pearl covers
Pearl covers go longer and turn harder at the end, best on medium oil.

Motiv Propulsion MXV Pearl Reactive
Medium oil

Motiv Propulsion MXR Pearl Reactive
Light to medium oil
Show 5 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Motiv Venom ExJ Limited Edition Bowling Ball | Motiv Turmoil MXC Solid Reactive | April 2024 |
| Motiv Carbide Tank Bowling Ball | Motiv Frixion M4 Solid MCP | October 2022 |
| Motiv Venom Panic Bowling Ball | Motiv Hexion MFP (Medium Friction Pearl) Pearl Reactive | January 2015 |
| Motiv Tank Blitz Bowling Ball | Motiv Frixion+ Microcell Polymer | November 2019 |
| Motiv Fatal Venom Bowling Ball | Motiv Infusion Pearl Reactive | October 2020 |
Where the Motiv 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.
Same family: Motiv Gear APG Core Same family: Motiv Gear V2 Core Same family: Motiv Gear Drive Core
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
Roto Grip | Asymmetric | 2.480 | 0.034 | Same RG and differential |
|
|
DV8 | Symmetric | 2.480 | 0.036 | RG 0.000 · Diff +0.002 |
|
|
Radical | Symmetric | 2.483 | 0.032 | RG +0.003 · Diff −0.002 |
|
|
Storm | Symmetric | 2.480 | 0.031 | RG 0.000 · Diff −0.003 |
|
|
Brunswick | Symmetric | 2.478 | 0.037 | RG −0.002 · Diff +0.003 |
|
|
Storm | Asymmetric | 2.470 | 0.035 | 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 Gear Core3 of the 8 balls with the Motiv Gear Core are in stock at BowlersMart. Same core, different covers: pick the cover for the lanes you bowl on.Solid coversSolid covers grip the lane soonest and suit heavier oil.
Questions bowlers ask
What is the RG of the Motiv Gear Core?
At 15 lb the Motiv Gear Core has an RG of 2.480. It ranges from 2.480 to 2.650 across the listed weights.
What is the 14 lb RG of the Motiv Gear Core?
At 14 lb the RG is 2.520.
What is the differential of the Motiv Gear Core?
At 15 lb the differential is 0.034. This is a symmetric core, so mass bias is not applicable.
Which bowling balls use the Motiv Gear Core?
Motiv Venom Hysteria Bowling Ball, Motiv Hyper Venom Bowling Ball, Motiv Venom Shock Bowling Ball, Motiv Venom ExJ Limited Edition Bowling Ball, Motiv Carbide Tank Bowling Ball. 3 are in stock now.
How do the Motiv Gear Core specs change by weight?
At 16 lb: RG 2.480, differential 0.031. At 12 lb: RG 2.650, differential 0.016.
How does the Motiv 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 Gear 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.


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