# Track Proof Pearl

> Bowling ball — data from CarryDown (https://www.carrydown.com/balls/track-proof-pearl/)

- Brand: Track
- Availability: discontinued
- Released/approved: 2020-08-04
- Coverstock: Prime Response Pearl (pearl)
- Core: Proof
- Intended condition: Medium oil
- Factory finish: 500, 1000 Siaair / Crown Factory Compound
- USBC approved: yes (2020-08-04)
- PBA certified: yes

## Specs by weight

| Weight | RG | Differential | Int. Diff | Mass Bias |
|---|---|---|---|---|
| 16 lb | 2.506 | 0.052 | — | — |
| 15 lb | 2.519 | 0.052 | — | — |
| 14 lb | 2.538 | 0.052 | — | — |
| 13 lb | 2.589 | 0.043 | — | — |
| 12 lb | 2.612 | 0.042 | — | — |

## Description

FOLLOW UP TO A GREAT BALL! It’s been a long-time since we’ve tested a ball like the Proof. A ball that looked great for everyone regardless of style and bowlers all over the world have confirmed this. While the Proof is known as a great ball, we are excited to follow it up with the Proof Pearl, a shiny version that gives you the same great reaction, that’s intended for more medium oil lane conditions.