Roto Grip bowling balls
The specs of every Roto Grip ball: 12 current and 0 retired, with their core, coverstock, RG and differential per weight. Pick up to 4 balls to compare them.
Latest from Roto Grip
Current lineup
HP4
HP5
HP3
HP2
HP1
EP
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Frequently asked questions
Roto Grip makes 12 bowling balls today. Our catalog also holds the specs of 0 Roto Grip balls that are no longer made.
The newest Roto Grip ball is the Perfect Gem, released on October 2, 2026.
Roto Grip is a brand of Storm Products.