{"merchant":{"slug":"bowlersmart","name":"BowlersMart","domain":"www.bowlersmart.com"},"id":"1300651","sku":"60-108539","gtin":null,"name":"Hammer Hammerhead Pearl Bowling Ball","brand":"Hammer","categories":[{"name":"Bowling Balls","slug":"bowling-balls"},{"name":"Bowling Gear","slug":"bowling-gear"},{"name":"Hammer","slug":"hammer"},{"name":"Hammer Bowling Balls","slug":"hammer-bowling-balls"},{"name":"High Performance Bowling Balls","slug":"high-performance-bowling-balls"},{"name":"Pearl Reactive Bowling Balls","slug":"pearl-reactive-bowling-balls"},{"name":"Pre-Orders / New Releases","slug":"new-bowling-balls"},{"name":"Symmetrical Core Bowling Balls","slug":"symmetrical-core-bowling-balls"}],"buy_url":"https://www.bowlersmart.com/product/hammer-hammerhead-pearl-bowling-ball/","pages":{"html":"https://ittems.com/bowlersmart/p/hammer-hammerhead-pearl-bowling-ball","md":"https://ittems.com/bowlersmart/p/hammer-hammerhead-pearl-bowling-ball.md","json":"https://ittems.com/bowlersmart/p/hammer-hammerhead-pearl-bowling-ball.json"},"price":{"min":149.95,"max":149.95,"currency":"USD"},"availability":"instock","checked_at":"2026-10-18T21:39:20.531434+00:00","source_updated_at":"2026-10-18T21:10:55+00:00","summary":"What should I know about the Hammerhead Pearl? Strong symmetric Spheroid Core, shared with the Hammerhead Aggression Pearl Reactive cover at a 1500-grit polish for length and a strong backend The clean, angular complement to the Hammerhead for medium oil and transition","specs":[{"key":"Brand","value":"Hammer"},{"key":"Bowling Ball Coverstock Type","value":"Pearl Reactive"},{"key":"Bowling Ball Cover Name","value":"Hammer Aggression Pearl Reactive"},{"key":"Bowling Ball Core Shape","value":"Symmetrical Core"},{"key":"Bowling Ball Core Name","value":"Hammer Spheroid Core"},{"key":"Radius of Gyration: RG (15LB)","value":"2.48"},{"key":"Differential: Diff (15LB)","value":".048"},{"key":"Flare Potential","value":"4 - 5 Inches"},{"key":"Surface Finish","value":"1500 Grit Polish"},{"key":"Preferred Lane Conditions","value":"Medium Oil"},{"key":"Bowling Ball Color","value":"Black, Green, Grey"},{"key":"Ball Performance Level","value":"Hammer Upper Mid Performance Bowling Balls, Mid Performance Bowling Balls"},{"key":"Release Date","value":"January 2026"}],"variants":[{"sku":"60-108539-936","gtin":"840315624085","label":"16LB","price":149.95,"stock":11,"options":{"Ball Weight":"16LB"},"availability":"instock","regular_price":249.95},{"sku":"60-108539-935","gtin":"840315624092","label":"15LB","price":149.95,"stock":36,"options":{"Ball Weight":"15LB"},"availability":"instock","regular_price":249.95},{"sku":"HAM6010853914","gtin":"840315624108","label":"14LB","price":149.95,"stock":17,"options":{"Ball Weight":"14LB"},"availability":"instock","regular_price":249.95},{"sku":"60-108539-933","gtin":"840315624115","label":"13LB","price":149.95,"stock":15,"options":{"Ball Weight":"13LB"},"availability":"instock","regular_price":249.95},{"sku":"60-108539-932","gtin":"840315624122","label":"12LB","price":149.95,"stock":7,"options":{"Ball Weight":"12LB"},"availability":"instock","regular_price":249.95}],"options":[{"name":"Drilling Protection","type":"multiple_choice","price":null,"choices":[{"label":"Yes - Covers Cracking During Ball Drilling","price":4.95,"price_type":"quantity_based"},{"label":"Decline Protection","price":null,"price_type":"quantity_based"}],"required":false,"price_type":null},{"name":"Extra 365 Warranty Coverage","type":"multiple_choice","price":null,"choices":[{"label":"Yes - Add 365 Warranty Coverage","price":5.95,"price_type":"quantity_based"},{"label":"Decline 365 Warranty Coverage","price":null,"price_type":"quantity_based"}],"required":false,"price_type":null},{"name":"Specific Requests","type":"custom_text","price":null,"choices":[],"required":false,"price_type":"quantity_based"}],"images":[{"alt":"Hammerhead_Pearl_1600x1600","url":"https://www.bowlersmart.com/wp-content/uploads/2025/12/Hammerhead_Pearl_1600x1600.webp"},{"alt":"Hammer_Head_Core_16-14_lb_1600x1600_callout","url":"https://www.bowlersmart.com/wp-content/uploads/2025/03/Hammer_Head_Core_16-14_lb_1600x1600_callout.png"},{"alt":"Hammer_Head_Core_13-12_lb_1600x1600_callout","url":"https://www.bowlersmart.com/wp-content/uploads/2025/03/Hammer_Head_Core_13-12_lb_1600x1600_callout.png"},{"alt":"hammerhead-ball-rating-500-jan2026","url":"https://www.bowlersmart.com/wp-content/uploads/2026/01/hammerhead-ball-rating-500-jan2026.jpg"}],"release_date":"January 2026","description":"The Spheroid Core With Clean Length and a Strong Backend\n\nAbout the Hammerhead Pearl\n\nThe Hammer Hammerhead Pearl takes the strong Spheroid core and adds length and a stronger backend. It pairs the symmetric Spheroid Core with the Aggression Pearl coverstock at a polished finish, so it gets down the lane cleaner than the solid Hammerhead and finishes with a strong, controllable move on medium oil and transition.\n\nThe Hammerhead Pearl is the length-and-angle complement to the solid. The pearl cover conserves energy through the heads, while the symmetric Spheroid core keeps the motion smooth and controllable. The result is more downlane shape than the solid without the sharp, hard-to-read flip of an asymmetric, exactly what you want as the lane transitions.\n\nUnderstanding the Hammer Spheroid Core and Hammer Aggression Pearl Reactive\n\nHammer built the Hammerhead Pearl for clean length and a strong backend from the Spheroid core. Specifically, the symmetric Spheroid Core posts a 2.481 RG and a strong .048 differential for an early roll with high flare, while the Aggression Pearl cover at a 1500-grit polish reads later than the solid and saves energy for a defined move down lane. As a result, it gives you length with a strong, controllable backend on medium oil and transition. The per-weight specifications are listed below.\n\nA Strong Symmetric Core, Shared With the Hammerhead\n\nAt the heart of the Hammerhead Pearl is the same symmetric Spheroid Core used in the solid Hammerhead. At 15 lb it measures a 2.481 RG and a strong .048 differential, numbers that produce an early roll with high flare for a symmetric ball. The strong differential gives it real hooking strength while the symmetric design keeps the reaction predictable.\n\nPairing that strong core with a pearl cover is what changes the personality: the same smooth, predictable roll as the solid Hammerhead, but with the energy held later for more length and a stronger backend.\n\nA Polished Pearl Cover for Length and a Defined Backend\n\nThe Hammerhead Pearl wraps that core in Hammer's Aggression Pearl Reactive coverstock at a 1500-grit polish. The pearl additive and polished surface let the ball conserve energy through the front of the lane, so it gets down cleaner than the solid Hammerhead and then makes a stronger, more defined move off the friction.\n\nThat clean read and strong backend make the Hammerhead Pearl the natural step from the solid: when the solid starts reading early on a drying lane, the pearl pushes through the heads and saves its energy for the pins. Leave it polished for length, or take the surface down at your pro shop for an earlier, smoother read on more oil.\n\nHammerhead Pearl Specs\n\nRG and differential vary by weight. Specifications provided by the manufacturer.\n\nWho This Ball Is Right For\n\n✓Tweener and Stroker Styles: Clean length with a strong, controllable backend and no sharp asymmetric flip\n\n✓League Bowlers: A versatile symmetric pearl for medium oil and transition, week in and week out\n\n✓Players Who Need Length: The energy-saving complement to the solid Hammerhead for getting through the heads cleanly\n\n✓Arsenal Builders: The length-and-angle pearl paired with the earlier-rolling solid Hammerhead\n\nGood to Know Before You Buy\n\n·Ships polished: The 1500 Grit Polish finish runs clean and long out of the box. For an earlier read on heavier oil, take the surface down at your pro shop.\n\n·Colors vary: Actual colors vary somewhat from the photos shown; no two balls come out of the mold exactly alike.\n\n·Tiny pit holes are normal: A few tiny pit holes in the coverstock are a normal part of the manufacturing process.\n\n·Sold undrilled: Ships without finger holes, so it can be fitted to your hand and span.\n\nBowlersMart Tips: Where the Hammerhead Pearl Fits in Your Hammer Arsenal\n\nWhere It Fits in Your Arsenal\n\nIn the Hammer lineup, the Hammerhead Pearl is the cleaner, longer-reading version of the Hammerhead. They share the Spheroid core, but the pearl reads later with a stronger backend. Throw the solid Hammerhead on fresh medium oil, then move to the Hammerhead Pearl as the lane transitions and you want more length.\n\nSurface Adjustments\n\nThe 1500-grit polish gives the Hammerhead Pearl its clean length and strong backend. Take the surface down with a lower-grit pad for an earlier, smoother read on more oil, or keep it polished for length when the lanes dry. Have surface changes done at your pro shop for an even, consistent finish.\n\nCoverstock Care\n\nWipe the Aggression Pearl cover with an approved reactive ball cleaner after every session, and deep clean it periodically. Keeping the cover fresh preserves the clean length and defined backend that define the Hammerhead Pearl.\n\nEarn points on every Hammer purchase through the Striking Rewards loyalty program. Every ball you add to your arsenal builds toward your next reward.\n\nShop With Confidence at BowlersMart\n\nThe Hammer Hammerhead Pearl Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Hammer dealer, every ball is genuine and covered by the full one-year Hammer warranty. Place your order before 2 PM EST and it ships the same day.\n\nWeight\nRadius of Gyration (RG)\nDifferential\n\n16 lbs\n2.500\n.039\n\n15 lbs\n2.481\n.048\n\n14 lbs\n2.510\n.048\n\n13 lbs\n2.585\n.040\n\n12 lbs\n2.608\n.040","policies":[{"text":"Free ground shipping on US orders, no minimum, 48 contiguous states and military APO/FPO. To Alaska, Hawaii, Puerto Rico and Guam bowling balls ship for $24.95 per ball, most other items free; oversized roller bags cost extra there. International orders pay the rate shown at checkout, duties paid locally.","title":"Shipping","source_url":"https://www.bowlersmart.com/shipping-information/"},{"text":"In-stock items ordered by 2PM EST Monday to Friday ship the same day, later orders the next business day. Carriers USPS, UPS, FedEx. Standard delivery 3 to 7 business days; expedited options at checkout.","title":"Processing and delivery","source_url":"https://www.bowlersmart.com/shipping-information/"},{"text":"60 days from delivery for US customers on new, unused items in original packaging, free prepaid return labels. Drilled bowling balls cannot be returned or exchanged. Shoes must have been tried on a clean, dry surface. Manufacturing defects and shipping damage go through the defect claim process.","title":"Returns","source_url":"https://www.bowlersmart.com/return-exchange-policy/"},{"text":"Credit and debit cards, PayPal, Apple Pay, Google Pay, Venmo, Amazon Pay, and buy now pay later through Affirm, Afterpay and Klarna.","title":"Payment","source_url":"https://www.bowlersmart.com/payment-options/"},{"text":"Pro shops inside bowling centers in 10 US states fit, drill and service equipment; a ball bought online can be drilled there.","title":"Pro shops","source_url":"https://www.bowlersmart.com/locations/"},{"text":"www.bowlersmart.com is the only website of BowlersMart. Lookalike domains are fraudulent.","title":"Identity","source_url":"https://www.bowlersmart.com/resources/scam-awareness/"}]}