Question: What should I know about the Roto Grip Perfect Gem?

Answer:

It's an HP4 asymmetric solid, released October 2, 2026. GEM + A.I. core, E-R1 Solid Reactive cover, 2000 Abralon finish. At 15 lb the numbers are RG 2.49, differential .057, and mass bias .017. Roto Grip built it for medium-heavy to heavy oil, with a cleaner front than the original Gem and a stronger move through the pins.

Related Questions Roto Grip Perfect Gem

bowling-balls Knowledge and Resources: Roto Grip Perfect Gem Ball Review: The Cleaner Gem That Still Hits

Go Deeper With This Related Article

Review of the Roto Grip Perfect Gem (street date October 2, 2026), covering the GEM + A.I. core, E-R1 Solid cover, how it sits against the original Gem and Magic Gem, and who should actually throw it on medium-heavy to heavy oil.

 Read Article