Many Storm and Roto Grip bowling balls are discontinued. Storm is discontinuing the Pro-Motion, Match Ups, and Physix. Roto Grip is discontinuing the Halo, Halo Vision, Halo Pearl, and Idol Pro. Still
DV8 Bowling | Retired
Quick Sale, Discontinued and Closeout Bowling Balls
DISCONTINUED* 2021 15 lbs 900 Global HB Intensity (Single Drill - Less than 5) | eBay
Spot the discontinued ball : r/Bowling
Replacing a Discontinued Ball In Your Bag - #RadicalRundown - YouTube
Find retired and sold out bowling ball specs at CheapBowlingBalls.com