{"product_id":"precor-discovery-series-leg-extension-remanufactured","title":"Precor Discovery Series Leg Extension (Remanufactured)","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 Precor Discovery Series Leg Extension delivers \u003cstrong\u003eselectorized quad isolation with gas-assisted seat adjustment, add-on weight micro-loading, 11-gauge fully welded steel, low-profile tower with translucent shrouds, and QR-coded instructional placards — 240 lb stack, 575 lb commercial frame, 53\"×49\" footprint\u003c\/strong\u003e. The leg extension is the primary machine for isolated quadriceps training — it loads the knee extension movement in isolation from the hip, concentrating the training stimulus on the rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius without glute or hamstring contribution. Gas-assisted seat adjustment is the Discovery Series feature that determines whether the positioning adjustment users need to make before each set actually gets made: seat position on a leg extension sets the relationship between the knee joint's anatomical pivot and the machine's rotational axis. When these two pivots are not aligned, the machine produces shear force at the knee joint rather than rotational force at the quads. A fixed or awkward seat adjustment gets skipped; a pneumatic one-motion adjustment from the seated position gets used. The 240 lb stack is the same above-standard capacity as the Discovery Seated Row and Lat Pulldown — meaningful for quad isolation where the quads are one of the largest muscle groups in the body and advanced users regularly press the ceiling of lighter stacks. Add-on weight enables sub-increment progression between standard stack settings. QR placards and the open low-profile tower with translucent shrouds maintain the Discovery Series' accessible, user-friendly commercial aesthetic.\u003c\/p\u003e\n\u003cp class=\"bs-desc\"\u003eLow-profile tower and translucent shrouds for a clean, open gym appearance. \u003cstrong\u003e575 lb Precor Discovery commercial frame\u003c\/strong\u003e, 240 lb stack, 53\"×49\" footprint. Remanufactured.\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\u003cspan class=\"bs-muscle-tag sec\"\u003eTibialis Anterior\u003c\/span\u003e\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=\"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\"\u003eGas-Assisted Seat — Pivot Alignment That Users Actually Set\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003eSeat position aligns the knee joint's anatomical pivot with the machine's rotational axis — misalignment routes shear force to the knee rather than rotational force to the quads. Pneumatic one-motion adjustment from the seated position removes the friction that causes users to skip this critical setup step. Add-on weight enables sub-increment loading for precise progressive overload between standard stack settings.\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\"\u003e240 lb Stack · 11-Gauge Frame · QR Placards · Open Tower\u003c\/div\u003e\n\u003cdiv class=\"bs-feat-desc\"\u003e240 lb is above the commercial leg extension standard, providing headroom for advanced users on a movement that loads the largest muscle group in the lower body. 11-gauge fully welded steel frame for long-term commercial stability under heavy quad training. QR-coded instructional placards and low-profile translucent shroud tower for a welcoming, self-guided user experience across all experience levels.\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\"\u003e53\" × 49\" × 59\"\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\"\u003e575 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\"\u003e240 lb + Add-On\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003eGas-assisted seat · QR placards · 11-gauge welded frame\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\"\u003eRemanufactured\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003ePrecor Discovery · \u003ca href=\"https:\/\/ctxhomegyms.com\/pages\/what-is-refurbished\" style=\"color: #888; text-decoration: underline;\"\u003eView condition details\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-card bs-span2\"\u003e\n\u003cdiv class=\"bs-spec-label\"\u003eDesign\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-val\"\u003e240+Add-On · Gas Seat · QR · 11-Gauge · 575 lb\u003c\/div\u003e\n\u003cdiv class=\"bs-spec-sub\"\u003e240 lb stack · Add-on weight · Gas-assisted seat · QR instructional placards · Low-profile tower · Translucent shrouds · 11-gauge welded steel · 575 lb frame · 53\"×49\" footprint\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ============================================================\nSEO FIELDS — paste into Shopify's Search Engine Listing section\n============================================================\n\nPage title (max 60 chars):\nPrecor Discovery Leg Extension | Remanufactured\n\nMeta description (max 160 chars):\nRemanufactured Precor Discovery Leg Extension. 240 lb stack, gas-assisted seat, add-on weight, 575 lb commercial quad isolation machine, 53×49\" footprint.\n\nTags (comma separated):\nPrecor Discovery leg extension, Precor leg extension remanufactured, 240lb leg extension, gas assisted seat leg extension, add-on weight leg extension, selectorized leg extension, QR placard leg extension, 11 gauge leg extension, commercial quad machine, remanufactured leg extension\n\n============================================================ --\u003e","brand":"Precor","offers":[{"title":"Default Title","offer_id":47452928213232,"sku":"PRE-DS-LE","price":2445.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0510\/0981\/4682\/files\/precor-discovery-leg-extension-image2-true-alpha-white-2048_6c7836f4-b1e2-4834-82e2-7a2d6ac12501.png?v=1787181711","url":"https:\/\/www.buildagym.com\/es\/products\/precor-discovery-series-leg-extension-remanufactured","provider":"Build A Gym","version":"1.0","type":"link"}