International Bowling Balls

2014 Lineup


We’re all about giving bowlers everything they need to be their best. But not just in the States. We’re also gearing up our friends across the pond and worldwide with unique product offerings available only to our international customers.

Star Alliance™

Star Alliance™


At Roto Grip, we rule the lanes, and we want you right there with us! As we designed the new Star Alliance, we considered first the core and then the coverstock. Some balls in the Royal line are built on a mild asymmetrical platform like the C.A.M.™ core design to balance transition and entry angle. Since we are looking to maximize backend reaction, the more dynamic, proven Pinnacle™ core is just what the doctor ordered.

As you know, coverstocks can be either solids, pearls, or combinations of the two, also known as hybrids. Maximum flip calls for a pearl mixture and, when polished to a smooth 1500-grit, the Armor™ coverstock clears the heads with ease and allows for more reaction at a later break point. The Star Alliance’s shell can easily be manipulated if you need to adjust the motion. It readily accepts your favorite surfacing pad or polish.

Most importantly, know this: Roto Grip manufactures to the highest standards, and that when you choose Roto Grip you are one step closer to becoming ‘king of them all! ™ ‘

Coverstock Name Armor™
Coverstock Type Reactive
Weight Block Pinnacle™ Core
Color Red/Silver/Purple
Finish 1500-grit Polish
Durometer 73-75 Rex D-scale
Flare Potential 7+ inches/High
Weights 12lbs - 16lbs


Weight Radius of
Differential PSA Differential
16 2.50 0.045 0.018
15 2.54 0.047 0.020
14 2.57 0.050 0.021
13 2.60 0.032 0.011
12 2.60 0.032 0.007
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