{"merchant":{"slug":"bowlersmart","name":"BowlersMart","domain":"www.bowlersmart.com"},"id":"1216345","sku":"60-108457","gtin":null,"name":"Hammer Maximum Effect Bowling Ball","brand":"Hammer","categories":[{"name":"Asymmetrical Core Bowling Balls","slug":"asymmetrical-core-bowling-balls"},{"name":"Bowling Ball Deals","slug":"bowling-ball-deals"},{"name":"Bowling Balls","slug":"bowling-balls"},{"name":"Bowling Balls for Two-Handed Bowlers","slug":"two-handed-bowling-balls"},{"name":"Bowling Brand","slug":"brands"},{"name":"Bowling Deals","slug":"bowling-deals"},{"name":"Hammer","slug":"hammer"},{"name":"Hammer Bowling Balls","slug":"hammer-bowling-balls"},{"name":"Heavy Oil Bowling Balls","slug":"heavy-oil-bowling-balls"},{"name":"High Performance Bowling Balls","slug":"high-performance-bowling-balls"},{"name":"Hybrid Reactive Bowling Balls","slug":"hybrid-reactive-bowling-balls"}],"buy_url":"https://www.bowlersmart.com/product/hammer-maximum-effect-bowling-ball/","pages":{"html":"https://ittems.com/bowlersmart/p/hammer-maximum-effect-bowling-ball","md":"https://ittems.com/bowlersmart/p/hammer-maximum-effect-bowling-ball.md","json":"https://ittems.com/bowlersmart/p/hammer-maximum-effect-bowling-ball.json"},"price":{"min":139.95,"max":139.95,"currency":"USD"},"availability":"instock","checked_at":"2026-10-18T18:39:24.877653+00:00","source_updated_at":"2026-10-18T17:36:17+00:00","summary":"What should I know about the Maximum Effect? Strong asymmetric Huntsman Core, shared across the Effect line HK22 Cohesion Hybrid cover at a 1500-grit finish for a strong, versatile read The strong, versatile hybrid of the Effect line for medium to heavy oil","specs":[{"key":"Brand","value":"Hammer"},{"key":"Release Date","value":"September 2025"},{"key":"Bowling Ball Coverstock Type","value":"Hybrid Reactive"},{"key":"Bowling Ball Cover Name","value":"Hammer HK22 Cohesion Hybrid Reactive"},{"key":"Bowling Ball Core Shape","value":"Asymmetrical Core"},{"key":"Bowling Ball Core Name","value":"Hammer Huntsman Core"},{"key":"Radius of Gyration: RG (15LB)","value":"2.47"},{"key":"Differential: Diff (15LB)","value":".050"},{"key":"Mass Bias Strength","value":".017"},{"key":"Flare Potential","value":"5 - 6 Inches"},{"key":"Surface Finish","value":"1500 Grit"},{"key":"Preferred Lane Conditions","value":"Medium - Heavy Oil"},{"key":"Bowling Ball Color","value":"Black, Green, Purple, Silver"},{"key":"Ball Performance Level","value":"Hammer Upper Mid Performance Bowling Balls, High Performance Bowling Balls"}],"variants":[{"sku":"60-108457-935","gtin":"840315623125","label":"15LB","price":139.95,"stock":268,"options":{"Ball Weight":"15LB"},"availability":"instock","regular_price":279.95}],"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":"flat_fee"},{"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":"flat_fee"},{"name":"Specific Requests","type":"custom_text","price":null,"choices":[],"required":false,"price_type":"quantity_based"}],"images":[{"alt":"Hammer Maximum Effect Bowling Ball","url":"https://www.bowlersmart.com/wp-content/uploads/2025/09/Hammer_Maximum_Effect_720x720.png"},{"alt":"hammer-effect-huntsman-core","url":"https://www.bowlersmart.com/wp-content/uploads/2024/03/hammer-effect-huntsman-core.png"},{"alt":"hammer-effect-12-13lb-core","url":"https://www.bowlersmart.com/wp-content/uploads/2024/03/hammer-effect-12-13lb-core.png"},{"alt":"Hammer Maximum Effect Bowling Ball","url":"https://www.bowlersmart.com/wp-content/uploads/2025/09/Hammer_Maximum_Effect_Performance_Badge_1600x1600.png"}],"release_date":"September 2025","description":"A Strong, Versatile Asymmetric Hybrid for Heavy Oil\n\nAbout the Maximum Effect\n\nThe Hammer Maximum Effect is the strong, versatile hybrid of the Effect line. It pairs the asymmetric Huntsman Core with the HK22 Cohesion Hybrid coverstock at a sanded finish, delivering big flare with a strong but adaptable read on medium to heavy oil. It reads the midlane firmly while staying versatile across a range of conditions.\n\nThe Maximum Effect shares the strong Huntsman asymmetric core with the rest of the Effect line but wraps it in a sanded hybrid cover. The HK22 Cohesion Hybrid blends solid and pearl material, so it reads the midlane strong like a solid while clearing the fronts a touch cleaner, a versatile, hard-driving option for heavy oil.\n\nUnderstanding the Hammer Huntsman Core and Hammer HK22 Cohesion Hybrid Reactive\n\nHammer built the Maximum Effect for strong but versatile motion on medium to heavy oil. Specifically, the asymmetric Huntsman Core posts a 2.470 RG, a strong .050 differential, and a .017 intermediate differential for high flare and a defined breakpoint, while the HK22 Cohesion Hybrid cover at a 1500-grit finish reads the midlane strong but clears the fronts cleaner than a solid. As a result, it gives you a strong, versatile asymmetric motion. The per-weight specifications are listed below.\n\nA Strong Asymmetric Core, Shared Across the Effect Line\n\nAt the heart of the Maximum Effect is the asymmetric Huntsman Core, shared across the Effect line. At 15 lb it measures a 2.470 RG, a strong .050 differential, and a .017 intermediate differential, a combination that produces high track flare and a defined, asymmetric breakpoint.\n\nBecause the Huntsman core is asymmetric, your pro shop can tune the layout to control how early and how strong the Maximum Effect plays. Pairing this strong core with a sanded hybrid cover is what gives the Maximum Effect its strong-but-versatile read.\n\nA Sanded HK22 Cohesion Hybrid for a Strong, Versatile Read\n\nThe Maximum Effect wraps that core in Hammer's HK22 Cohesion Hybrid Reactive coverstock at a 1500-grit finish. As a hybrid, the cover blends solid and pearl material, so it reads the midlane strong like a solid but clears the fronts a touch cleaner like a pearl, giving the ball big flare with a versatile motion.\n\nThat blend is what makes the Maximum Effect such an adaptable heavy-oil piece: it reads firmly but stays versatile across a range of conditions. Leave it at the 1500-grit box finish for medium to heavy oil, take the surface lower for more traction, or polish it up for more length as the lanes dry.\n\nMaximum Effect Specs\n\nRG and differential vary by weight. Specifications provided by the manufacturer.\n\nWho This Ball Is Right For\n\n✓Tournament Players: A strong, versatile asymmetric hybrid for medium to heavy oil\n\n✓Higher-Rev Bowlers: The strong Huntsman core and hybrid cover reward revs with a strong, continuous shape\n\n✓Power Players: Big flare with a slightly cleaner read for clearing oil and driving through the pins\n\n✓Arsenal Builders: The versatile hybrid of the Effect line, between the early solid and the cleaner Full Effect\n\nGood to Know Before You Buy\n\n·Strong, aggressive motion: This is a high-flare piece built for traction. If you want a controlled, lower-hook reaction, a lower-differential ball will suit you better.\n\n·Ships sanded for traction: The 1500 Grit finish is built to grip in oil. Polish it for more length when the volume drops.\n\n·Asymmetric layout sensitivity: Layout choices shift the reaction more than on a symmetric ball. Match the pin and mass bias to your game with 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 Maximum Effect Fits in Your Hammer Arsenal\n\nWhere It Fits in Your Arsenal\n\nIn the Hammer lineup, the Maximum Effect is the strong, versatile hybrid of the Effect line. It shares the Huntsman core with the Special Effect and Full Effect, reading a touch later than the solid Special Effect and a touch earlier than the polished Full Effect. It is the versatile middle of the Effect family for medium to heavy oil.\n\nSurface Adjustments\n\nThe 1500-grit finish gives the Maximum Effect its strong, versatile read. Take the surface lower for more traction on heavier oil, or polish it up for more length as the lanes dry. Have surface changes done at your pro shop for an even, consistent finish.\n\nCoverstock Care\n\nWipe the HK22 Cohesion cover with an approved reactive ball cleaner after every session, and deep clean it periodically. Keeping the cover fresh preserves the strong, versatile read that defines the Maximum Effect.\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 Maximum Effect 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\nMass Bias\n\n16 lbs\n2.483\n.043\n.015\n\n15 lbs\n2.470\n.050\n.017\n\n14 lbs\n2.495\n.050\n.016\n\n13 lbs\n2.597\n.041\n.014\n\n12 lbs\n2.593\n.041\n.014","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/"}]}