Track Kinetic Amethyst Bowling Ball Beast Bowling Ball The core was created to

The core was created to offer heavy mid-lane roll

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and 2000 grit)

stretch spandex back provides flexibility and breathability

Track Kinetic Amethyst Bowling Ball Beast Bowling Ball The core was created toTrack continues the popular Kinetic series in the Track Kinetic Amethyst. This ball features the modified Kinetic core which has a low RG, medium differential, and low mass bias. These components allow this ball to save its energy longer but use it quicker. Track has combined this core with the QR 6 Pearl coverstock which gives length with a quick reaction to friction. With a 500 1000 grit polished finish this ball is recommended for medium oil