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Roto Grip Defiant Bowling Ball


The Defiant bowling ball is available at our site and is another fine addition to the Royal Line of Roto Grip bowling ball products. Roto Grip has been a leading brand in the bowling industry for years and continues to provide pro performance lines of bowling balls. The Defiant bowling ball is the latest release in a strong and controllable reacting ball by Roto Grip and is available for a great price, with free shipping, with free insurance and with absolutely no hidden charges at bowlingball.com.

Let's look at some technical specifications for the Defiant bowling ball provided courtesy of Roto Grip, Inc.:

Coverstock MicroBite™ Solid Reactive
Weight Block Paragon™ Core
Ball Color Blue/Purple/Black
Ball Finish 3000-grit Abralon®
Durometer 73-75 Rex D-scale
Flare Potential 7+ (High)
Weights 12 - 16 lbs.
SKU# RDE
RG: 2.49 Low
Differential: 0.052 High

Starting at the the new Paragon™ core, the Defiant features contours designed to help expand the RG planes of the ball. This unique elliptical shape defines predictability of axis migration and allows you to perfectly match up your ball reaction to the condition at hand. Strong midlane roll and a HUGE continuous, sweeping hook on the backend!

Moving on to the shell, the Defiant has developed a new MicroBite™ coverstock that is stronger and more textured than the competition. Microtechnology, the use of extremely-small structured additives down to a millionth of a meter, makes this possible. When finished with 3000-grit Abralon®, this new MicroBite shell creates a high degree of friction.


The Defiant is sure to handle even the heaviest amounts of oil. Today’s lane oils have more solids than ever before, making the lanes very slick at times. With the new Defiant, no more worrying about heavy oil often found on tournament shots.

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