Hammer Hammerhead Pearl Upper Mid Performance Bowling Ball The Hammerhead earned its reputation as a no-nonsense benchmark ball with unbeatable value, and now the line takes the next step forward. The Hammerhead Pearl is built to attack medium to broken-down lane conditions with explosive backend motion and unmistakable Hammer attitude. When stronger balls start burning up or losing energy, the Hammerhead Pearl stays clean through the front and unleashes powerful continuation through the pins. Featuring the proven Spheroid core and the HK22 – Aggression Pearl coverstock, this ball doesn’t just fill a spot in your arsenal—it takes control of it. Designed for confidence, consistency, and striking power, the Hammerhead Pearl is ready to dominate when it matters most. Product Info Core Specs Videos Downloads LEVEL Mid PART NUMBER 60-108539-93X COLOR(S) Onyx / Silver / Yellow CORE Spheroid COVERSTOCK HK22 - Aggression Pearl COVER TYPE Pearl Reactive FINISH 500, 1000, 1500 Siaair / Factory Compound BALL MOTION Length with aggressive backend LANE CONDITION Medium oil WEIGHTS 12-16 lbs RELEASE DATE January 15, 2026 WARRANTY Hammer 2 Year Limited Warranty * Product Note: 12-13 lb. models of this ball use an alternate core that is different from the heavier models. WEIGHT RG DIFF 16 lbs 2.500 0.039 15 lbs 2.481 0.048 14 lbs 2.510 0.048 13 lbs 2.585 0.040 12 lbs 2.608 0.040 Hammer Hammerhead Pearl - Tech Sheet