{"product_id":"matrix-g7-back-extension-remanufactured","title":"Matrix G7 Back Extension (Remanufactured)","description":"\u003cp\u003e \u003c\/p\u003e\n\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-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 Matrix G7 Back Extension strengthens the lower back through a \u003cstrong\u003eseated, fully supported extension\u003c\/strong\u003e — the user drives back against a contoured pad while the machine guides the torso through a controlled arc. Selectorized resistance trains the spinal erectors directly, with far more control and precise loading than a roman chair or hyperextension bench.\u003c\/p\u003e\n\u003cp class=\"bs-desc\"\u003eMulti-position foot placement fits a wide range of users, and a \u003cstrong\u003ethumb-switch start position\u003c\/strong\u003e lets each person set a comfortable range of motion without leaving the seat. A 240 lb stack and heavy-gauge G7 frame make it a durable core and posterior-chain staple for commercial strength floors, physical-conditioning spaces, and serious home gyms.\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\u003cspan class=\"bs-muscle-tag\"\u003eLower Back\u003c\/span\u003e\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\"\u003eGlutes\u003c\/span\u003e \u003cspan class=\"bs-muscle-tag sec\"\u003eHamstrings\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\u003crect x=\"5\" y=\"11\" width=\"14\" height=\"8\" rx=\"2\"\u003e\u003c\/rect\u003e\u003cpath d=\"M5 11V7a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2v4\"\u003e\u003c\/path\u003e\u003cline x1=\"8\" y1=\"19\" x2=\"8\" y2=\"21\"\u003e\u003c\/line\u003e\u003cline x1=\"16\" y1=\"19\" x2=\"16\" y2=\"21\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eContoured back pad\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eShaped to spread load evenly across the upper back, keeping pressure off the spine through every extension.\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=\"20\" x2=\"20\" y2=\"20\"\u003e\u003c\/line\u003e\u003cline x1=\"4\" y1=\"20\" x2=\"4\" y2=\"6\"\u003e\u003c\/line\u003e\u003cline x1=\"4\" y1=\"20\" x2=\"18\" y2=\"6\"\u003e\u003c\/line\u003e\u003cpath d=\"M4 13 a9 9 0 0 1 7 -7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003eThumb-switch start position\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eAdjust the starting angle from the seat with a single thumb switch, setting a safe, comfortable range for each user.\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=\"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\"\u003eMulti-position foot placement\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eSeveral foot positions let users of different heights brace securely and keep the hips locked in place.\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=\"2\" y=\"10\" width=\"4\" height=\"4\" rx=\"1\"\u003e\u003c\/rect\u003e\u003crect x=\"18\" y=\"10\" width=\"4\" height=\"4\" rx=\"1\"\u003e\u003c\/rect\u003e\u003cline x1=\"6\" y1=\"12\" x2=\"18\" y2=\"12\"\u003e\u003c\/line\u003e\u003crect x=\"5\" y=\"9\" width=\"3\" height=\"6\" rx=\"0.5\"\u003e\u003c\/rect\u003e\u003crect x=\"16\" y=\"9\" width=\"3\" height=\"6\" rx=\"0.5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"bs-feat-name\"\u003e240 lb selectorized stack\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003ePin-select resistance adjusts in seconds, scaling from light rehab-style work to heavy posterior-chain 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\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\"\u003eCommercial steel construction\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eHeavy-duty G7 frame and durable upholstery are built for daily commercial use with minimal maintenance.\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\"\u003e51\" × 48\" × 54\"\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003e1275 × 1200 × 1350 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eProduct weight\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e704 lb\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003e319 kg\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\"\u003e240 lb\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003e109 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eStart position\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003eThumb-switch\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003eAdjustable from the seat\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Matrix","offers":[{"title":"Default Title","offer_id":67585089175715,"sku":"MTX-G7-BCK-EXT","price":2295.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0510\/0981\/4682\/files\/ChatGPTImageSep30_2026_12_50_53PM.png?v=1790790695","url":"https:\/\/www.buildagym.com\/es\/products\/matrix-g7-back-extension-remanufactured","provider":"Build A Gym","version":"1.0","type":"link"}