# Roto Grip Optimum Idol Solid

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/roto-grip-optimum-idol-solid/)

- Brand: Roto Grip
- Availability: unknown
- Released/approved: 2026-01-12
- Coverstock: [XtremeTrax Solid Reactive](https://www.carrydown.com/brands/roto-grip/coverstocks/xtremetrax/) (solid)
- Core: [Ikon MD AI](https://www.carrydown.com/brands/roto-grip/cores/ikon-md-ai/) (symmetric)
- Intended condition: Medium-heavy oil
- Factory finish: 2000-grit Abralon
- Flare potential: High
- List price (MSRP): no manufacturer price found
- USBC approved: yes (2025-08-05)

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.47 | 0.054 | — | — |
| 15 lb | 2.47 | 0.056 | — | — |
| 14 lb | 2.51 | 0.054 | — | — |
| 13 lb | 2.58 | 0.047 | — | — |
| 12 lb | 2.64 | 0.037 | — | — |