May's Bowling Pro Shops. Roto Grip

Roto Grip Perfect Gem Bowling Ball

E-R1 Solid Reactive cover, GEM + A.I. (asymmetric) core. Best for medium-heavy to heavy oil.

$289.95 $199.95

NanoStar Pearl Reactive cover, Rocker AI (symmetric) core. Best for medium to medium-heavy oil.

$249.95

MicroTrax Solid Reactive cover, RST Core + AI (asymmetric) core. Best for medium-heavy to heavy oil.

$289.95

U-R1 Pearl Reactive cover, RST Core + AI (asymmetric) core. Best for medium to medium-heavy oil.

$289.95 $169.95

Asymmetric pearl continuing Roto Grip's Transform series, tuned for a versatile, easy-to-read motion.

$289.95 $209.95

Asymmetric solid built for tunability, aimed at serious bowlers and pro shops wanting precise layout control.

$289.95 $167.95