# Roto Grip TOUR DYNAM-X

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/roto-grip-tour-dynam-x/)

- Brand: Roto Grip
- Availability: discontinued
- Released/approved: 2023-06-20
- Coverstock: [TourTrax Solid Reactive](https://www.carrydown.com/brands/roto-grip/coverstocks/tourtrax/) (solid)
- Core: [Rondure Tour Core](https://www.carrydown.com/brands/roto-grip/cores/rondure-tour-core/)
- Intended condition: Medium oil
- Factory finish: 2000-Grit Abralon
- Flare potential: Low Medium
- List price (MSRP): no manufacturer price found
- USBC approved: yes (2023-06-20)
- PBA certified: yes

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.48 | 0.026 | — | — |
| 15 lb | 2.47 | 0.026 | — | — |
| 14 lb | 2.52 | 0.026 | — | — |
| 13 lb | 2.57 | 0.032 | — | — |
| 12 lb | 2.59 | 0.029 | — | — |

## Description

From day one, the end goal was to develop and create a high-performance ball from a completely different performance-focused dynamic perspective. Tour level players and above average bowlers around the globe have always asked for a ball that produces control and continuation with minimal direction change in order to battle those tougher and more demanding and over reacting conditions. They spoke, we listened! So we went to work to create the ultimate "TOUR PLAYER" ball, and well, after lots of trials, and lots of errors, we were able to construct the optimum control and continuation for every single bowler no matter their rev rate. Starting with lowering the RG to force the core into motion early, we reduced the overall differential to allow the ball to stay on line much longer than normal, thus reducing the overall direction change we traditionally see from this level of performance ball. And if that wasn't enough, we opted to add in the mild asymmetry aspect which also helps the ball stay on line longer while adding more drive through the pin deck with less overall deflection.