Roto Grip Perfect Gem
A high-flare asymmetric solid designed for medium-heavy to heavy oil, using the Gem A.I. core and E-R1 Solid cover for strong traction with more energy saved for the backend.
What to expect.
The Perfect Gem combines Roto Grip's Gem A.I. asymmetric core with E-R1 Solid Reactive. It is designed to create substantial traction on medium-heavy to heavy oil while clearing the front of the lane more cleanly than earlier Gem shapes and retaining energy for a stronger finish.
A strong option for oil.
Bowlers looking for a high-flare asymmetric solid when there is enough oil to support a stronger cover and core combination. Bill can help determine whether the Perfect Gem fits the gap in your current arsenal.
Key Roto Grip Perfect Gem specs.
Use these as a starting point. Bill can help match ball choice, layout and fit to your game.
*Published Roto Grip specifications shown for 16 lb; exact core numbers can vary by ball weight.
Release note: Manufacturer release date is October 2, 2026. Call Bowling Medic for preorder and weight availability.
Specifications based on current manufacturer information. Manufacturer product page ↗
Looking for a Roto Grip Perfect Gem in Plano or DFW?
Call Bowling Medic for October Monthly Specials pricing and weight availability. Bill handles fitting and drilling personally. Official release date: October 2, 2026.