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Outer shell of the ball
MP Gen 1 Reactive
Surface texture on the ball (sanded, polished, etc)
2000 Polished
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. - 2.51
15 LB. - 2.46
16 LB. - 2.46
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. - .037
15 LB. - .041
16 LB. - .039
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.

Temper Product Notes


With the Legion core shape and our MP GEN 1 covestock, it performs best when you need a clean entry through the front with angularity on the back end. Temper comes 2000-grit Abralon® sanded and polished with Powerhouse™ Factory Finish. This makes for a great combination of control with sheer power. 

Find the Temper in a Pro Shop near you >

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