{"merchant":{"slug":"bowlersmart","name":"BowlersMart","domain":"www.bowlersmart.com"},"id":"1301284","sku":"BBMRLL","gtin":null,"name":"Roto Grip Transformer Bowling Ball","brand":"Roto Grip","categories":[{"name":"Asymmetrical Core Bowling Balls","slug":"asymmetrical-core-bowling-balls"},{"name":"Bowling Balls","slug":"bowling-balls"},{"name":"Bowling Balls for Two-Handed Bowlers","slug":"two-handed-bowling-balls"},{"name":"Bowling Brand","slug":"brands"},{"name":"Heavy Oil Bowling Balls","slug":"heavy-oil-bowling-balls"},{"name":"High Performance Bowling Balls","slug":"high-performance-bowling-balls"},{"name":"Pre-Orders / New Releases","slug":"new-bowling-balls"},{"name":"Roto Grip","slug":"roto-grip"},{"name":"Roto Grip Bowling Balls","slug":"roto-grip-bowling-balls"},{"name":"Solid Reactive Bowling Balls","slug":"solid-reactive-bowling-balls"}],"buy_url":"https://www.bowlersmart.com/product/roto-grip-transformer-bowling-ball/","pages":{"html":"https://ittems.com/bowlersmart/p/roto-grip-transformer-bowling-ball","md":"https://ittems.com/bowlersmart/p/roto-grip-transformer-bowling-ball.md","json":"https://ittems.com/bowlersmart/p/roto-grip-transformer-bowling-ball.json"},"price":{"min":167.95,"max":167.95,"currency":"USD"},"availability":"instock","checked_at":"2026-10-15T20:14:34.835987+00:00","source_updated_at":"2026-10-15T19:20:20+00:00","summary":"What should I know about the Transformer? Drill-tunable Morph-Wing asymmetric core that transforms when drilled Nano-free V-R1 Solid Reactive cover at a 4000-grit finish Strong, controllable hook for medium to medium-heavy oil","specs":[{"key":"Brand","value":"Roto Grip"},{"key":"Bowling Ball Core Shape","value":"Asymmetrical Core"},{"key":"Bowling Ball Core Name","value":"Roto Grip Morph-Wing Core"},{"key":"Bowling Ball Coverstock Type","value":"Reactive"},{"key":"Bowling Ball Cover Name","value":"Roto Grip V-R1 Reactive"},{"key":"Radius of Gyration: RG (15LB)","value":"2.51"},{"key":"Differential: Diff (15LB)","value":".051"},{"key":"Flare Potential","value":"4 - 5 Inches"},{"key":"Mass Bias Strength","value":".015"},{"key":"Ball Performance Level","value":"Roto Grip HP5 Bowling Balls"},{"key":"Surface Finish","value":"4000 Grit"},{"key":"Preferred Lane Conditions","value":"Medium - Heavy Oil"},{"key":"Bowling Ball Color","value":"Blue, Purple"},{"key":"Scent","value":"None"},{"key":"Release Date","value":"January 2026"}],"variants":[{"sku":"RGBBMRLL16","gtin":"887970758328","label":"16LB","price":167.95,"stock":24,"options":{"Ball Weight":"16LB"},"availability":"instock","regular_price":289.95},{"sku":"RGBBMRLL15","gtin":"887970758304","label":"15LB","price":167.95,"stock":199,"options":{"Ball Weight":"15LB"},"availability":"instock","regular_price":289.95},{"sku":"RGBBMRLL14","gtin":"887970758274","label":"14LB","price":167.95,"stock":174,"options":{"Ball Weight":"14LB"},"availability":"instock","regular_price":289.95},{"sku":"RGBBMRLL13","gtin":"887970758243","label":"13LB","price":167.95,"stock":78,"options":{"Ball Weight":"13LB"},"availability":"instock","regular_price":289.95},{"sku":"RGBBMRLL12","gtin":"887970758212","label":"12LB","price":167.95,"stock":81,"options":{"Ball Weight":"12LB"},"availability":"instock","regular_price":289.95}],"images":[{"alt":"roto-grip-transformer-700-jan2026","url":"https://www.bowlersmart.com/wp-content/uploads/2026/01/roto-grip-transformer-700-jan2026.jpg"},{"alt":"Morph-Wing Core_front","url":"https://www.bowlersmart.com/wp-content/uploads/2025/12/Morph-Wing-Core_front-1.webp"},{"alt":"transformer","url":"https://www.bowlersmart.com/wp-content/uploads/2025/12/transformer-1.png"}],"release_date":"January 2026","description":"The Most Tunable Asymmetric Solid in the Game\n\nAbout the Transformer\n\nThe Roto Grip Transformer is built around one idea: tunability. It pairs the drill-tunable Morph-Wing asymmetric core with the nano-free V-R1 Solid Reactive coverstock to give serious bowlers and pro shops the most adjustable ball motion in the lineup. The Transformer does not just react to the lane, it can be drilled to transform into the exact shape your game needs.\n\nThat adaptability comes from the Morph-Wing core. Unlike a traditional asymmetric, displacing mass in the wing section during drilling fundamentally changes the core numbers, unlocking a completely new flare pattern and ball motion. Wrapped in the balanced, dependable traction of the V-R1 Solid cover at a 4000-grit finish, the Transformer reads medium to medium-heavy oil with strong, controllable hook. Stop adapting to the lanes and make the lanes adapt to you.\n\nUnderstanding the Roto Grip Morph-Wing Core and Roto Grip V-R1 Solid Reactive\n\nRoto Grip built the Transformer to be the most tunable asymmetric in the lineup. Specifically, the Morph-Wing core is engineered to change drastically when drilled: removing mass from the wing alters the core numbers, so your pro shop can reshape the flare and motion to fill almost any slot in your bag. The nano-free V-R1 Solid Reactive cover, finished at 4000 grit, delivers the most balanced traction-to-reaction ratio of Roto Grip's nano-free materials, for strong but controllable hook through medium-heavy oil. The full per-weight specifications are listed below.\n\nA Drill-Tunable Asymmetric Core That Transforms When Drilled\n\nAt the heart of the Transformer is the asymmetric Morph-Wing core. At 15 lb it measures RG 2.51, a strong .051 differential, and a .015 intermediate differential (mass bias), numbers that produce strong, defined asymmetric motion. What sets it apart is the wing geometry: unlike a traditional asymmetric, displacing mass in the wing section during drilling fundamentally changes the core numbers, unlocking a completely new flare pattern and ball motion.\n\nThat is the whole point of the Transformer. The same core can be laid out for an earlier, smoother roll or a later, more angular shape depending on how the wings are drilled, so one ball can be tuned to fill more than one slot in your arsenal. It is one of the most adaptable asymmetric cores Roto Grip has built, and it rewards working with a good pro shop to dial in the exact reaction you want.\n\nA Nano-Free Solid With the Most Balanced Traction-to-Reaction Ratio\n\nThe Transformer wraps that tunable core in the V-R1 Solid Reactive coverstock, finished at 4000 grit. The V-R1 (Versatile Response) solid is a nano-free formulation that Roto Grip built to deliver the most balanced and dependable traction-to-reaction ratio of any of its nano-free materials. It grabs the mid-lane for an early, controllable read, then responds smoothly to friction down-lane rather than jumping.\n\nThat balance is what makes the Transformer so versatile. The solid cover gives you the traction to handle medium to medium-heavy oil, while the 4000-grit finish keeps the read controllable and continuous. Take the surface down at your pro shop for an even earlier, stronger response when the oil increases, or polish it up for more length when the lanes dry out.\n\nTransformer 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, tunable asymmetric solid your pro shop can lay out to fit changing conditions\n\n✓Higher-Rev Bowlers: The Morph-Wing core rewards revs with strong, controllable flare and a continuous, balanced motion\n\n✓Arsenal Builders: The drill-tunable core lets you customize the reaction to fill a specific gap, an earlier benchmark or a later, more angular look\n\n✓Pro Shop Customers: Built for bowlers who work with a driller to dial in an exact ball motion rather than buying off the rack\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 at a clean box finish: The 4000 Grit finish is a smooth, sanded surface that still gets down the lane. Take it lower for an earlier read on heavier oil, or polish it up for more length.\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 Transformer Fits in Your Roto Grip Arsenal\n\nWhere It Fits in Your Arsenal\n\nIn the Roto Grip lineup, the Transformer is your strong, tunable benchmark solid for medium to medium-heavy oil. It attacks fresher, heavier volume than a pearl with an early, controllable read, and because the Morph-Wing core is so adjustable, your driller can lay it out to sit higher or lower in the bag. It pairs naturally below your strongest, most aggressive solid and above a cleaner pearl like the Transform Pearl, the controllable workhorse you tune to your exact need.\n\nSurface Adjustments\n\nThe 4000-grit finish is a controllable box surface. Take it down with a lower-grit pad for an earlier, stronger read on heavier oil, or polish it up for more length when the lanes dry out. Have surface changes done at your pro shop for an even, consistent finish.\n\nCoverstock Care\n\nWipe the V-R1 Solid cover with an approved reactive ball cleaner after every session, and deep clean it periodically. Keeping a solid cover fresh preserves the balanced mid-lane traction that makes the Transformer so dependable.\n\nEarn points on every Roto Grip 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 Roto Grip Transformer Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Roto Grip dealer, every ball is genuine and covered by the full one-year Roto Grip 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\n2.50\n.050\n.015\n\n15 lbs\n2.51\n.051\n.015\n\n14 lbs\n2.53\n.053\n.013\n\n13 lbs\n2.57\n.032\n.010\n\n12 lbs\n2.59\n.029\n.008","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/"}]}