{"product_id":"keystone-back-extension-with-iw-rc1","title":"Vision V-KEY-SL-52-K2 Back Extension with IW + RC1","description":"\u003cp\u003eVision Keystone Back Extension with IW + RC1\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"487\"\u003eThe Vision Keystone Back Extension with Incremental Weight is a premium selectorized strength machine designed to effectively target the lower back and posterior chain while promoting proper biomechanics and controlled movement. Featuring independent arm movement and ergonomic support pads, this machine helps improve core stability, spinal support, and overall back strength. Ideal for commercial fitness facilities and high-end home gyms.\u003c\/p\u003e\n\u003ch2 data-start=\"489\" data-end=\"622\"\u003eKEY FEATURES\u003cbr data-start=\"501\" data-end=\"504\"\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"624\" data-end=\"755\"\u003e\u003cstrong\u003eTargeted Posterior Chain Training\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Effectively engages lower back, glutes, and core muscles for functional strength development.\u003c\/p\u003e\n\u003cp data-start=\"757\" data-end=\"871\"\u003e\u003cstrong\u003eErgonomic Pad Design\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e– Angled chest and hip pads encourage proper positioning and reduce strain during exercise.\u003c\/p\u003e\n\u003cp data-start=\"757\" data-end=\"871\"\u003e\u003cstrong\u003eIncremental Weight (IW)\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e– Built-in incremental weight system allows precise resistance adjustments for progressive training.\u003c\/p\u003e\n\u003cp data-start=\"873\" data-end=\"990\"\u003e\u003cstrong\u003eAdjustable Range of Motion\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Allows users to customize movement start position for comfort and training preference.\u003c\/p\u003e\n\u003cp data-start=\"992\" data-end=\"1097\"\u003e\u003cstrong\u003eSelectorized Weight Stack\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Provides smooth, controlled resistance throughout the full range of motion.\u003c\/p\u003e\n\u003cp data-start=\"1099\" data-end=\"1210\"\u003e\u003cstrong\u003eCommercial\u003c\/strong\u003e-Grade Steel Frame – Durable construction built for long-term performance in high-use environments.\u003c\/p\u003e\n\u003cp data-start=\"1212\" data-end=\"1302\"\u003e\u003cstrong\u003eComfort Padding \u0026amp; Upholstery\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e– High-density padding enhances stability and user comfort.\u003c\/p\u003e\n\u003cp data-start=\"1304\" data-end=\"1410\"\u003e\u003cstrong\u003eEnclosed Weight Stack\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Protective shrouds improve safety and maintain a clean, professional appearance.\u003c\/p\u003e\n\u003ch2 data-start=\"1412\" data-end=\"1774\"\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003cp data-start=\"1412\" data-end=\"1774\"\u003e\u003cbr data-start=\"1426\" data-end=\"1429\"\u003e\u003cstrong\u003eModel:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVision Keystone Back Extension w\/ IW\u003cbr data-start=\"1472\" data-end=\"1475\"\u003e\u003cstrong\u003eMachine Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSelectorized back extension\u003cbr data-start=\"1516\" data-end=\"1519\"\u003e\u003cstrong\u003eMovement Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndependent arm motion\u003cbr data-start=\"1556\" data-end=\"1559\"\u003e\u003cstrong\u003eResistance Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSelectorized weight stack\u003cbr data-start=\"1601\" data-end=\"1604\"\u003e\u003cstrong\u003eFrame Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCommercial-grade steel\u003cbr data-start=\"1638\" data-end=\"1641\"\u003e\u003cstrong\u003eAdjustments:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eRange of motion adjustment\u003cbr data-start=\"1680\" data-end=\"1683\"\u003e\u003cstrong\u003eWeight Stack:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eApprox. 200 lbs (varies by configuration)\u003cbr data-start=\"1738\" data-end=\"1741\"\u003e\u003cstrong\u003eUse:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eCommercial and residential\u003c\/p\u003e\n\u003ch2 data-start=\"1776\" data-end=\"1902\"\u003eDIMENSIONS \u0026amp; WEIGHT\u003c\/h2\u003e\n\u003cp data-start=\"1776\" data-end=\"1902\"\u003e\u003cbr data-start=\"1795\" data-end=\"1798\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eApprox. 55\" L x 45\" W x 60\" H\u003cbr data-start=\"1839\" data-end=\"1842\"\u003e\u003cstrong\u003eProduct Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eApprox. 500+ lbs (varies by configuration)\u003c\/p\u003e\n\u003ch2 data-start=\"1904\" data-end=\"1966\"\u003eWARRANTY\u003c\/h2\u003e\n\u003cp data-start=\"1904\" data-end=\"1966\"\u003e\u003cbr data-start=\"1912\" data-end=\"1915\"\u003e\u003cstrong\u003eFrame:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eLifetime\u003cbr data-start=\"1930\" data-end=\"1933\"\u003e\u003cstrong\u003eParts:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5 years\u003cbr data-start=\"1947\" data-end=\"1950\"\u003e\u003cstrong\u003eLabor:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e2 years\u003c\/p\u003e","brand":"Vision","offers":[{"title":"Default Title","offer_id":45173106540623,"sku":"Vision Keystone Back Extension with IW + RC1","price":3299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/9045\/7167\/files\/vision-keystone-back-extension-with-iw-1204349.webp?v=1781561405","url":"https:\/\/universalfitnesssolutions.com\/products\/keystone-back-extension-with-iw-rc1","provider":"Universal Fitness Solutions ","version":"1.0","type":"link"}