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ALLIANCE™, Bowling Ball

International Balls

ALLIANCE™, Bowling Ball by Roto Grip CAD Render of Ball Core

From the depths of the inner sanctum comes the ultimate in High Performance technology; the Alliance™. The fusion of the best design processes along with extended research has created the most dynamic asymmetrical weight block in the all-new Pinnacle™ core. The quick revving, highly angular design ensures quick response to the oil up front and the friction down the lane. The surface surrounding this weapon is the all-new Armor™ pearl reactive. This unique blend of pearl reactive coverstock creates the perfect combination of hook from foul line to pin deck. So gather the troops and prepare to dominate the kingdom!

ALLIANCE™ Ball Facts
Coverstock Armor™ Pearl  Reactive 
Weight Block Pinnacle™
Ball ColorBlack / Purple / Silver
Ball Finish1500 Polished
Durometer 73 - 75 Rex D-scale
Flare Potential 7+ inches (High)
Weights 10 - 16 lbs.
SKU# NA
ALLIANCE™ Ball Dynamics
Ball WeightRadius of GyrationDifferentialMass Bias Diff.
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
11# 2.60 0.032 0.007
10# 2.60 0.032 0.007
Drill Specifications
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