{"product_id":"build-fractal-series-leg-extension-new","title":"BUILT Strength Fractal Series Leg Extension (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 Fractal Series Leg Extension isolates the quadriceps through a seated extension with an \u003cstrong\u003eergonomic seat angle engineered to reduce knee pressure\u003c\/strong\u003e — the seat geometry positions the hip and thigh in the correct relationship to the knee joint, distributing the extension forces more evenly across the patellar tendon and reducing shear stress under heavy loading. An adjustable backrest and pivoting ankle pad accommodate different leg lengths for precise positioning before every set.\u003c\/p\u003e\n\u003cp class=\"bs-desc\"\u003eA 300 lb selectorized stack supports bilateral and unilateral leg extensions with smooth, consistent tension through the full extension arc. \u003cstrong\u003eA 636 lb heavy-duty commercial steel frame\u003c\/strong\u003e delivers the structural stability and longevity for sustained professional quad isolation training. New.\u003c\/p\u003e\n\u003chr class=\"bs-divider\"\u003e\n\u003cp class=\"bs-section-label\"\u003ePrimary muscles targeted\u003c\/p\u003e\n\u003cdiv class=\"bs-muscles\" style=\"margin-bottom: 10px;\"\u003e\n\u003cspan class=\"bs-muscle-tag\"\u003eRectus Femoris\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eVastus Lateralis\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eVastus Medialis\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag\"\u003eVastus Intermedius\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\"\u003eHip Flexors\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag sec\"\u003eTibialis Anterior\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\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\"\u003eErgonomic Seat Angle — Reduced Knee Pressure\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eThe seat angle positions the hip and thigh correctly relative to the knee joint — distributing extension forces more evenly and reducing patellar tendon shear stress under heavy loading for joint-friendly quad isolation training.\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 Backrest \u0026amp; Pivoting Ankle Pad\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eAn adjustable backrest and pivoting ankle pad accommodate any leg length and preferred starting position — keeping the knee joint correctly aligned with the pivot axis for consistent quad loading across all user sizes.\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=\"3\" y1=\"12\" x2=\"21\" y2=\"12\"\u003e\u003c\/line\u003e\u003cline x1=\"3\" y1=\"12\" x2=\"9\" y2=\"6\"\u003e\u003c\/line\u003e\u003cline x1=\"3\" y1=\"12\" x2=\"9\" y2=\"18\"\u003e\u003c\/line\u003e\u003cline x1=\"21\" y1=\"12\" x2=\"15\" y2=\"6\"\u003e\u003c\/line\u003e\u003cline x1=\"21\" y1=\"12\" x2=\"15\" y2=\"18\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eBilateral \u0026amp; Unilateral Extension\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eBoth legs together for standard bilateral quad development, or single-leg unilateral work for addressing left-right strength imbalances — both options supported by the same 280 lb selectorized stack without any attachment change.\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\u003crect x=\"3\" y=\"3\" width=\"18\" height=\"18\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cline x1=\"3\" y1=\"9\" x2=\"21\" y2=\"9\"\u003e\u003c\/line\u003e\u003cline x1=\"9\" y1=\"21\" x2=\"9\" y2=\"9\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003e300 lb Stack · 636 lb Commercial Frame\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eA 300 lb selectorized stack covers light quad activation through serious progressive loading. The 636 lb commercial-grade steel frame provides the structural stability for sustained high-frequency professional quad isolation training.\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\"\u003e65\" × 42\" × 58\"\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eMachine Weight\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e636 lb\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eWeight Stack\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e300 lb\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003ePin-select selectorized\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\"\u003eFractal 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\"\u003eDesign \u0026amp; Adjustability\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003eErgonomic Seat Angle · Adj. Backrest \u0026amp; Pivot Pad\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003eJoint-friendly seat angle · Adjustable backrest \u0026amp; pivoting ankle pad · Bilateral \u0026amp; unilateral · 280 lb selectorized\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eFrame\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e11-Gauge (3mm) Steel\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 Fractal Leg Extension Machine | New\n\nMeta description (max 160 chars):\nNew BUILT Strength Fractal Series Leg Extension. 280 lb selectorized, ergonomic seat angle reduces knee pressure, pivoting ankle pad, bilateral or unilateral, 636 lb frame.\n\nTags (comma separated):\nFractal Series leg extension, selectorized leg extension, leg extension machine, BUILT Strength, quad isolation machine, 280lb leg extension, joint friendly leg extension, bilateral unilateral extension, commercial quad machine, new gym equipment, ergonomic seat leg extension, Fractal Series\n\n============================================================ --\u003e","brand":"BUILT Strength","offers":[{"title":"Default Title","offer_id":47730494767344,"sku":"GW015","price":3295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0510\/0981\/4682\/files\/GW015__BUILT-Strength-Fractal-Series-Leg-Extension-New__media-01-white-2048_f1d1a165-adce-4149-bc4a-8e3aa1ff449a.png?v=1787188576","url":"https:\/\/www.buildagym.com\/es\/products\/build-fractal-series-leg-extension-new","provider":"Build A Gym","version":"1.0","type":"link"}