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Outer shell of the ball
UMP Gen 4A Reactive™ Pearl
Surface texture on the ball (sanded, polished, etc)
800, 1000, 2000, 2000 Abralon® sanded, polished with Powerhouse Factory Finish
Lane Condition
Length and/or amount of oil on the lane
Color of the ball
Weight block inside the ball
Core Type
Basic shape type of the core (Symmetric, Asymmetrical, Pancake)
Radius of Gyration: measurement related to weight distribution of the core. This affects how quickly a ball will get in to a roll. A ball with a higher RG will roll later. A ball with lower RG will roll sooner.
14 LB. - 2.48
15 LB. - 2.50
16 LB. - 2.51
Difference between the RG of the core's x-axis and y-axis. Indicates track flare potential and stability. A higher differential means more flare potential and less stabilty. A low differential ball will be more stable and have less flare potential.
14 LB. - .054
15 LB. - .058
16 LB. - .055
Intermediate Differential 
Difference between the RG of the core's x-axis and Z-axis on an asymmetrical core. Indicates the asymmetry of the core. A higher intermediate differential ball will be less stable and will transition more quickly from skid to roll than a ball with lower intermediate differential.

718A Honor Roll

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  • Jason Ring300\778
  • Kevin Doss300/779
  • Douglas Brosseau300
  • Rob Godwin299,300,219 (818)
  • Jason Richards847
  • Don Davis300
  • Larry Buchheim 157-300-206--663
  • Matthew D Cox300
  • Jesse Robinson300/220/258/778
  • Gregory Donovan Jr.300

718A Product Notes


This all new 7 Series ball, the 718A, was designed to be a new and improved version of 2009’s 715A. In the two years since the introduction of the 715A, we have been working to design a more usable product for the masses. We used your feedback to design the 718A. 

Find the 718A in a Pro Shop near you >

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