{"product_id":"2026-specialized-s-works-tarmac-carbon-post-clean","title":"2026 Specialized S-Works Tarmac Carbon Post (Clean)","description":"\u003cbody\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eS-Works Tarmac Carbon Post\u003c\/title\u003e\n\u003cstyle\u003e\n@import url(https:\/\/fonts.googleapis.com\/css2?family=Barlow+Condensed:wght@400;600;700;800\u0026family=Barlow:wght@300;400;500\u0026display=swap);\n:root { --black: #0a0a0a; --white: #ffffff; --mid: #f5f5f5; --border: #e0e0e0; --text-muted: #777; --text-body: #222; }\n* { box-sizing: border-box; margin: 0; padding: 0; }\n.spur-wrap { font-family: 'Barlow', sans-serif; background: var(--white); color: var(--black); max-width: 1100px; margin: 0 auto; padding: 48px 24px; }\n.spur-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 48px; border-bottom: 1px solid var(--border); padding-bottom: 24px; flex-wrap: wrap; gap: 12px; }\n.spur-title { font-family: 'Barlow Condensed', sans-serif; font-size: clamp(28px, 5vw, 48px); font-weight: 800; letter-spacing: -0.02em; line-height: 1; text-transform: uppercase; }\n.spur-meta { font-size: 12px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }\n.spur-tabs { display: flex; gap: 4px; margin-bottom: 32px; flex-wrap: wrap; }\n.spur-tab { font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 10px 24px; background: var(--mid); color: var(--text-muted); border: 1px solid var(--border); cursor: pointer; transition: all 0.15s; border-radius: 2px; display: inline-block; }\n.spur-tab:hover { color: var(--black); border-color: #aaa; }\n.spur-tab.active { background: var(--black); color: var(--white); border-color: var(--black); }\n.spur-panel { display: none; }\n.spur-panel.active { display: block; }\n.spur-panel p { font-size: 14px; font-weight: 300; line-height: 1.7; color: var(--text-body); margin-bottom: 16px; }\n.desc-intro { font-size: 16px; font-weight: 400; line-height: 1.65; color: var(--text-body); margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }\nul.desc-list { list-style: none; padding: 0; margin: 0 0 20px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 6px 24px; }\nul.desc-list li { font-size: 13px; font-weight: 400; line-height: 1.5; color: var(--text-body); }\n.key-section { border-bottom: 1px solid var(--border); padding: 16px 0; }\n.key-section:last-child { border-bottom: none; }\n.key-title { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--black); margin-bottom: 6px; }\n.key-desc { font-size: 14px; font-weight: 300; color: var(--text-body); line-height: 1.5; }\n.spec-category { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--black); padding: 20px 0 8px; border-bottom: 2px solid var(--black); margin-bottom: 0; }\n.spec-row { display: grid; grid-template-columns: 200px 1fr; border-bottom: 1px solid var(--border); }\n.spec-row:hover { background: var(--mid); }\n.spec-key { font-size: 12px; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-muted); padding: 12px 16px 12px 0; }\n.spec-val { font-size: 14px; font-weight: 300; color: var(--text-body); padding: 12px 0; line-height: 1.5; }\n.warning-block { background: #fff3cd; border: 1px solid #ffc107; padding: 14px 16px; margin-top: 16px; font-size: 13px; font-weight: 500; color: #856404; line-height: 1.5; border-radius: 2px; }\n@media (max-width: 600px) { .spec-row { grid-template-columns: 1fr; } .spec-key { padding-bottom: 2px; } .spec-val { padding-top: 0; padding-bottom: 12px; } ul.desc-list { grid-template-columns: 1fr; } }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"spur-wrap\"\u003e\n\u003cdiv class=\"spur-header\"\u003e\n\u003cdiv class=\"spur-title\"\u003eS-Works Tarmac Carbon Post\u003c\/div\u003e\n\u003cdiv class=\"spur-meta\"\u003eReplacement Seatpost · Tarmac SL7 · FACT Carbon · Aero Profile · Di2 Integration\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spur-tabs\"\u003e\n\u003cbutton class=\"spur-tab active\" onclick=\"showPanel('desc', this)\"\u003eDescription\u003c\/button\u003e\n\u003cbutton class=\"spur-tab\" onclick=\"showPanel('key', this)\"\u003eKey Features\u003c\/button\u003e\n\u003cbutton class=\"spur-tab\" onclick=\"showPanel('specs', this)\"\u003eSpecifications\u003c\/button\u003e\n\u003c\/div\u003e\n\n\u003cdiv id=\"panel-desc\" class=\"spur-panel active\"\u003e\n\u003cp class=\"desc-intro\"\u003eThis replacement seatpost for the Tarmac SL7 ensures the perfect fit with two different setback options — 0mm and 20mm. Built from FACT carbon with an aerodynamic profile, it integrates seamlessly with the 2021 Tarmac SL7's clean lines and electronic shifting. The sleek Di2 integration hides the junction box inside, keeping the lines clean and the bike fast.\u003c\/p\u003e\n\n\u003cul class=\"desc-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eFACT Carbon Construction:\u003c\/strong\u003e Full carbon body — lightweight, aerodynamic, Tarmac SL7 specific.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAero Profile:\u003c\/strong\u003e Aerodynamically shaped — reduces drag at the seat tube junction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Setback Options:\u003c\/strong\u003e 0mm or 20mm — find your ideal position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDi2 Integration:\u003c\/strong\u003e Hides the Di2 junction box inside — clean, aero look.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum Head Assembly:\u003c\/strong\u003e Cylindrical head — fore-aft and tilt adjustment with single bolt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSL7 Specific:\u003c\/strong\u003e Designed for the 2021 Tarmac SL7 — direct replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis is a replacement post for an SL7 — not a universal seatpost. If you're building a Tarmac SL7 or need a replacement, this is the exact spec'd post. The Di2 integration is a key feature if you're running electronic shifting on an SL7.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv id=\"panel-key\" class=\"spur-panel\"\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eSL7 Specific — Not Universal\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe S-Works Tarmac Carbon Post is specifically designed for the 2021 Tarmac SL7 — it's not a universal seatpost. The aero profile, Di2 integration, and head geometry are all tuned for the SL7 frame. If you need a replacement for a Tarmac SL7, this is the correct part. For other frames, look to the Roval Alpinist or Control SL seatposts which are universal fit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003eDi2 Integration — Clean Electronic Shifting\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe Di2 junction box hides inside the seatpost — this is a significant aesthetic and aerodynamic improvement over external junction boxes. The cable routing inside the frame exits into the seatpost at the head, and the junction box sits in a cavity within the post. If you're running Shimano Di2 on your SL7, this keeps everything clean and internal.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"key-section\"\u003e\n\u003cdiv class=\"key-title\"\u003e0mm vs. 20mm Setback — How to Choose\u003c\/div\u003e\n\u003cdiv class=\"key-desc\"\u003eThe Tarmac SL7 is an aggressive race bike, and the 20mm setback option is common for riders who want a more traditional position with the saddle slightly behind the bottom bracket. The 0mm setback is for riders who want maximum forward position for an ultra-aggressive aero tuck. Most riders will be on the 20mm option unless they're very flexible or running an extremely low stem.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv id=\"panel-specs\" class=\"spur-panel\"\u003e\n\n\u003cdiv class=\"spec-category\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eModel\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eS-Works Tarmac Carbon Post\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eUse\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eReplacement post for 2021 Tarmac SL7\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eFACT carbon — full carbon body\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eProfile\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eAerodynamic — reduces drag at seat tube junction\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-category\"\u003eFit\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSetback Options\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e0mm or 20mm — two options for position preference\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eTarmac SL7\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompatible with 2021 Tarmac SL7\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-category\"\u003eDi2 Integration\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eDi2 Junction Box\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eHides inside seatpost — clean internal routing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eIntegration\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eSleek Di2 integration — aerodynamic and clean look\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"spec-category\"\u003eClamp\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eHead Assembly\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCylindrical aluminum head\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eAdjustment\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eFore-aft and tilt via single easy-access bolt\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"warning-block\"\u003e⚠️ \u003cstrong\u003eTarmac SL7 Only:\u003c\/strong\u003e This seatpost is designed specifically for the 2021 Tarmac SL7. It is not a universal seatpost — confirm your frame is an SL7 before ordering. For other frames, see Roval's universal seatpost options.\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\nfunction showPanel(id, btn) {\n document.querySelectorAll('.spur-panel').forEach(p =\u003e p.classList.remove('active'));\n document.querySelectorAll('.spur-tab').forEach(t =\u003e t.classList.remove('active'));\n document.getElementById('panel-' + id).classList.add('active');\n btn.classList.add('active');\n}\n\u003c\/script\u003e\n\n\n\n\u003c\/body\u003e","brand":"Specialized","offers":[{"title":"Satin Carbon \/ 300mm x 20mm Offset","offer_id":52012745654592,"sku":"28122-3925","price":450.0,"currency_code":"USD","in_stock":true},{"title":"Satin Carbon \/ 380mm x 20mm Offset","offer_id":52012745687360,"sku":"28122-3935","price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7487\/5549\/files\/28122-3935_f7dce578-2070-45d9-8bec-3f09cf27f5cc.jpg?v=1778797651","url":"https:\/\/spokex.com\/products\/2026-specialized-s-works-tarmac-carbon-post-clean","provider":"SX Collective","version":"1.0","type":"link"}