CROWN 78U 4+

In addition to these regulations, Brunswick recognizes the use of harder urethane balls on tougher tournament patterns and for high rev rates. They developed a new urethane ball with more flare potential and more dynamic numbers to meet the needs of those bowlers. The new Crown 78U features the Tiered Hexagon core shape from the Crown Victory, a higher RG and medium differential core, providing bowlers with an option not currently available on the market. The harder 78 durometer urethane cover has limitations that a more dynamic core helps alleviate, creating a new level of ball motion option for bowlers using urethane.

Core Numbers

	16 lb	15 lb	14 lb	13 lb	12 lb
RG	2.577	2.549	2.566	2.574	2.597
DIFF	0.039	0.046	0.046	0.040	0.040

Spec Label	Spec Value
Level	Advanced
Part Number	60-108363-93X
Color	Purple / Grey
Core	Tiered Hexagon
Coverstock	Urethane Solid 78D
Cover Type	Urethane
Finish	500, 1000 Siaair Micro Pad
Weights	16-12 lbs.
Release Date	December 11, 2025

Performance Index:

ADVANCED:
Performance features with a wide range of reactions for bowlers of all skill levels.

CONTROL:

Predictable, typically a smooth ball motion throughout the lane. Balls with higher numbers will have more overall reaction.

REACTION SHAPE STRENGTH: 40
The higher the number the stronger the reaction shape – with 1 being the least and 100 the most.

DynamiCore Technology The Crown 78U features Brunswick’s innovative outer core technology called DynamiCore. This industry-leading 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. Learn more about DynamiCore Technology