Bowling ball core · Motiv
Motiv Torx Core
The core inside the Motiv Forza line
A symmetric core with mid-lane rev-up and high flare, built for medium to heavy oil. Balls with this core are no longer available at BowlersMart.
- Symmetric
- RG 2.500
- Diff 0.051

Specs
RG AT 15 LB
2.500
Mid-lane rev-up
40% of the reactive and urethane balls we stock have a lower RG.
DIFFERENTIAL AT 15 LB
0.051
High flare
68% 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 | 2.500 | 0.046 | None |
| 15 lbUsed on this page | 2.500 | 0.051 | None |
| 14 lb | 2.530 | 0.047 | None |
Source: Motiv published specs, as shown on BowlersMart’s original Motiv Torx 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 Forza?
Balls with the Motiv Torx Core are no longer available at BowlersMart. These in-stock balls have the closest RG and differential.

Brunswick Alpha Premier Solid HK22C2 Reactive
Medium to heavy oil

SWAG Supreme Solid AP26
Heavy oil, medium to heavy oil

DV8 Maximum Havoc Hybrid Reactive
Medium to heavy oil

Hammer HK22 C2 Solid Reactive
Medium to heavy oil

Roto Grip MicroTrax Pearl Reactive
Medium to heavy oil, medium oil

Radical Outer Limits Black Hole
Radical HK22C Solid Reactive
Heavy oil
Balls with the Motiv Torx Core
None of the 4 balls with the Motiv Torx Core are in stock at BowlersMart right now.
Show 4 balls no longer available at BowlersMart
| Ball | Cover | First seen |
|---|---|---|
| Motiv Forza Bowling Ball | Motiv Helix Solid Reactive | November 2014 |
| Motiv Forza Redline Bowling Ball | Motiv Helix Pearl Reactive | August 2015 |
| Motiv Forza GT Bowling Ball | Motiv Helix HR Hybrid Reactive | June 2016 |
| Motiv Covert Tank Bowling Ball | Motiv Frixion Microcell Polymer | May 2019 |
Where the Motiv Torx 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 Torx V2 Core
This core 1 Nearest cores Other cores
| Core | Brand | Shape | RG | Diff | vs this core |
|---|---|---|---|---|---|
|
|
SWAG | Asymmetric | 2.500 | 0.051 | Same RG and differential |
|
|
Radical | Asymmetric | 2.499 | 0.051 | RG −0.001 · Diff 0.000 |
|
|
Brunswick | Asymmetric | 2.502 | 0.051 | RG +0.002 · Diff 0.000 |
|
|
Hammer | Asymmetric | 2.501 | 0.050 | RG +0.001 · Diff −0.001 |
|
|
DV8 | Asymmetric | 2.504 | 0.051 | RG +0.004 · Diff 0.000 |
|
|
Brunswick | Symmetric | 2.501 | 0.048 | RG +0.001 · Diff −0.003 |
Matches use 15 lb RG and differential.
Drilling and tools
The powerful new Torx engine produces a 2.50 RG and .051 differential on the 15# model. It revs up easily and is capable of producing over 5” of track flare. The new Torx is formulated to produce the friction required to read the mid-lane incredibly well, yet still display devastating continuation and drive through the pins.
Questions bowlers ask
What is the RG of the Motiv Torx Core?
At 15 lb the Motiv Torx Core has an RG of 2.500. It ranges from 2.500 to 2.530 across the listed weights.
What is the 14 lb RG of the Motiv Torx Core?
At 14 lb the RG is 2.530.
What is the differential of the Motiv Torx Core?
At 15 lb the differential is 0.051. This is a symmetric core, so mass bias is not applicable.
Which bowling balls use the Motiv Torx Core?
Motiv Forza Bowling Ball, Motiv Forza Redline Bowling Ball, Motiv Forza GT Bowling Ball, Motiv Covert Tank Bowling Ball. 0 are in stock now.
Can I still buy a ball with the Motiv Torx Core?
Balls with this core are currently unavailable at BowlersMart. Closest in-stock alternatives by RG and differential include Brunswick Combat Solid Bowling Ball, SWAG Executioner Solid Bowling Ball, DV8 Heckler Taunt Bowling Ball, Hammer Spawn Bowling Ball, Roto Grip Transform Pearl Bowling Ball, Radical Outer Limits Black Hole Bowling Ball.
How do the Motiv Torx Core specs change by weight?
At 16 lb: RG 2.500, differential 0.046. The 12 lb values are not listed.
How does the Motiv Torx 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 Torx 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 2026-10-17.


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