{"product_id":"built-strength-og-series-plate-loaded-seated-leg-extension-leg-curl-new","title":"BUILT Strength ‘OG’ Series Plate Loaded Seated Leg Extension \/ Leg Curl (New)","description":"\u003cstyle\u003e\n  .bs-wrap *{box-sizing:border-box;margin:0;padding:0}\n  .bs-wrap{font-family:'Barlow',sans-serif;color:#1a1a1a;max-width:700px}\n  .bs-badge{display:inline-block;background:#1a1a1a;color:#f0ebe3;font-size:11px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;padding:4px 10px;border-radius:3px;margin-bottom:16px}\n  .bs-desc{font-size:15px;line-height:1.8;color:#444;margin-bottom:24px}\n  .bs-desc strong{color:#1a1a1a;font-weight:500}\n  .bs-divider{border:none;border-top:1px solid #e5e5e5;margin:24px 0}\n  .bs-section-label{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#999;font-weight:500;margin-bottom:12px}\n  .bs-muscles{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}\n  .bs-muscle-tag{font-size:12px;font-weight:500;padding:5px 13px;border-radius:20px;background:#fff7ed;color:#92400e;border:1px solid #fcd9a0}\n  .bs-muscle-tag.sec{background:#f5f5f5;color:#666;border-color:#e0e0e0}\n  .bs-specs-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:24px}\n  .bs-spec-card{background:#f7f7f5;border-radius:8px;padding:14px 16px}\n  .bs-spec-label{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:#999;margin-bottom:4px}\n  .bs-spec-val{font-family:'Barlow Condensed',sans-serif;font-size:20px;font-weight:600;color:#1a1a1a}\n  .bs-spec-sub{font-size:12px;color:#888;margin-top:3px}\n  .bs-feat{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-top:1px solid #efefef}\n  .bs-feat:last-child{border-bottom:1px solid #efefef}\n  .bs-feat-icon{width:30px;height:30px;border-radius:50%;background:#fff0f0;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}\n  .bs-feat-icon svg{width:14px;height:14px;stroke:#dc2626;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}\n  .bs-feat-name{font-size:14px;font-weight:500;color:#1a1a1a;margin-bottom:3px}\n  .bs-feat-desc{font-size:13px;color:#666;line-height:1.6}\n  .bs-span2{grid-column:span 2}\n\u003c\/style\u003e\n\u003cdiv class=\"bs-wrap\"\u003e\n\u003cp class=\"bs-desc\"\u003eThe BUILT Strength OG Series Plate Loaded Leg Extension \/ Seated Leg Curl switches between quad isolation and hamstring development via a \u003cstrong\u003equick-change pop-pin selector — no tools, no significant setup time\u003c\/strong\u003e between exercises. The transition is designed to be fast and intuitive, keeping training momentum high without a lengthy reconfiguration between movements.\u003c\/p\u003e\n\u003cp class=\"bs-desc\"\u003eA self-adjusting lower leg pad automatically maintains correct alignment through both exercises, and the adjustable back pad and start position settings accommodate any user size. A firm round thigh pad locks the body stable during curls to prevent hip lift and keep hamstring load consistent throughout the movement. \u003cstrong\u003eStarting at 20 lb with plate-loaded resistance\u003c\/strong\u003e — warm-up through maximal loading with no stack ceiling. Two integrated weight horns keep plates organized on the unit. New.\u003c\/p\u003e\n\u003chr class=\"bs-divider\"\u003e\n\u003cp class=\"bs-section-label\"\u003eLeg extension — primary muscles\u003c\/p\u003e\n\u003cdiv class=\"bs-muscles\" style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"bs-muscle-tag\"\u003eQuadriceps\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eRectus Femoris\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"bs-section-label\"\u003eLeg curl — primary muscles\u003c\/p\u003e\n\u003cdiv class=\"bs-muscles\" style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"bs-muscle-tag\"\u003eBiceps Femoris\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eSemitendinosus\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eSemimembranosus\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"bs-section-label\"\u003eSecondary muscles\u003c\/p\u003e\n\u003cdiv class=\"bs-muscles\" style=\"margin-bottom: 0;\"\u003e\n\u003cspan class=\"bs-muscle-tag sec\"\u003eGastrocnemius\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag sec\"\u003eGlutes\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag sec\"\u003eHip Flexors\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr class=\"bs-divider\"\u003e\n\u003cp class=\"bs-section-label\"\u003eKey features\u003c\/p\u003e\n\u003cdiv class=\"bs-feat\"\u003e\n\u003cdiv class=\"bs-feat-icon\"\u003e\u003csvg viewbox=\"0 0 24 24\"\u003e\u003cline x1=\"4\" y1=\"6\" x2=\"20\" y2=\"6\"\u003e\u003c\/line\u003e\u003cline x1=\"4\" y1=\"12\" x2=\"20\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"4\" y1=\"18\" x2=\"20\" y2=\"18\"\u003e\u003c\/line\u003e\u003ccircle cx=\"8\" cy=\"6\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"16\" cy=\"12\" r=\"2\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"10\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003ePop-Pin Quick-Change Between Exercises\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eA pop-pin selector converts the machine between leg extension and seated leg curl without tools — a fast, intuitive transition that keeps training intensity high without significant setup time between movements.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-feat\"\u003e\n\u003cdiv class=\"bs-feat-icon\"\u003e\u003csvg viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 12c-2-2.5-4-4-6-4a4 4 0 0 0 0 8c2 0 4-1.5 6-4z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 12c2 2.5 4 4 6 4a4 4 0 0 0 0-8c-2 0-4 1.5-6 4z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eSelf-Adjusting Lower Leg Pad\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eThe lower leg pad automatically adjusts to maintain correct alignment through both extension and curl movements — reducing manual setup between exercises and ensuring proper positioning for every user without additional adjustment steps.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-feat\"\u003e\n\u003cdiv class=\"bs-feat-icon\"\u003e\u003csvg viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2l8 4v6c0 5-4 9-8 10-4-1-8-5-8-10V6l8-4z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eFirm Round Thigh Pad\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eA firm round thigh pad braces the leg during seated curls — preventing hip lift and keeping the hamstrings under consistent, direct load through the full curl arc without compensation from the hip flexors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-feat\"\u003e\n\u003cdiv class=\"bs-feat-icon\"\u003e\u003csvg viewbox=\"0 0 24 24\"\u003e\u003cline x1=\"4\" y1=\"6\" x2=\"14\" y2=\"6\"\u003e\u003c\/line\u003e\u003ccircle cx=\"18\" cy=\"6\" r=\"2\"\u003e\u003c\/circle\u003e\u003cline x1=\"4\" y1=\"12\" x2=\"20\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"4\" y1=\"18\" x2=\"14\" y2=\"18\"\u003e\u003c\/line\u003e\u003ccircle cx=\"18\" cy=\"18\" r=\"2\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eAdjustable Back Pad \u0026amp; Start Positions\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eBack pad and start position both adjust independently for any user size — setting the correct hip angle and range of motion for both exercises before the first rep begins and maintaining it throughout the set.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-feat\"\u003e\n\u003cdiv class=\"bs-feat-icon\"\u003e\u003csvg viewbox=\"0 0 24 24\"\u003e\u003cline x1=\"12\" y1=\"3\" x2=\"12\" y2=\"21\"\u003e\u003c\/line\u003e\u003cline x1=\"5\" y1=\"21\" x2=\"19\" y2=\"21\"\u003e\u003c\/line\u003e\u003crect x=\"7\" y=\"6\" width=\"10\" height=\"3\" rx=\"1.5\"\u003e\u003c\/rect\u003e\u003crect x=\"8\" y=\"11\" width=\"8\" height=\"3\" rx=\"1.5\"\u003e\u003c\/rect\u003e\u003crect x=\"9\" y=\"16\" width=\"6\" height=\"2.5\" rx=\"1.25\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003ePlate-Loaded — 20 lb Starting Weight\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eOlympic plate loading with a 20 lb starting weight covers warm-up and technique work through to maximal loading — no stack ceiling, unrestricted progressive overload for serious quad and hamstring development over time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"bs-divider\"\u003e\n\u003cp class=\"bs-section-label\"\u003eSpecifications\u003c\/p\u003e\n\u003cdiv class=\"bs-specs-grid\"\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eDimensions (L × W × H)\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e48\" × 55\" × 45\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eTotal Weight\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e430 lb\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eStarting Weight\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e20 lb\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003ePlate-loaded · No stack ceiling\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eCondition\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003eNew\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003eOG Series · BUILT Strength\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card bs-span2\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eFunctions \u0026amp; Adjustability\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003eLeg Extension · Seated Leg Curl\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003ePop-pin quick-change · Self-adjusting leg pad · Adjustable back pad \u0026amp; ROM · Firm thigh pad · 2 weight horns\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ============================================================\nSEO FIELDS — paste these into Shopify's Search Engine Listing section\n============================================================\n\nPage title (max 60 chars):\nBUILT Strength OG Series Leg Extension Curl | New\n\nMeta description (max 160 chars):\nNew BUILT Strength OG Series plate loaded leg extension and curl. Pop-pin quick-change, self-adjusting leg pad, 20 lb start, 430 lb frame, and 2 weight storage horns.\n\nTags (comma separated):\nplate loaded leg extension curl, OG Series leg machine, dual function leg machine, leg extension leg curl, BUILT Strength, pop pin leg machine, self adjusting leg pad, commercial leg machine, quad hamstring machine, new gym equipment, plate loaded lower body, OG Series\n\n============================================================ --\u003e","brand":"BUILT Strength","offers":[{"title":"Ember Fusion","offer_id":49461741256944,"sku":"SA1618","price":1395.0,"currency_code":"USD","in_stock":true},{"title":"Stealth","offer_id":49461741289712,"sku":"SA1618-B","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0510\/0981\/4682\/files\/Untitled_design_42.png?v=1770917666","url":"https:\/\/www.buildagym.com\/es\/products\/built-strength-og-series-plate-loaded-seated-leg-extension-leg-curl-new","provider":"Build A Gym","version":"1.0","type":"link"}