Brunswick Kingpin Bowling Ball Brunswick pushes the hook boundaries to the extreme with the all new Kingpin! We combined our new ECA (Enhanced Composite Adhesion) coverstock with our new Kingpin asymmetrical core to achieve the largest hook potential in Brunswick s history. Able to conquer the heaviest oil patterns, the Kingpin will produce good length through the front, the strongest mid lane adhesion allowing for exceptional backend motion on oily to heavy oil lane conditions. The Kingpin features a new innovation in outer core technology called DynamiCore. This leap in bowling ball technology is a more durable outer material that yields less compression upon impact increasing hitting power and creating an undeniable difference in sound and pin carry. DynamiCore is blue and will be noticeable when drilling into the Kingpin.