{"id":23516,"date":"2026-03-11T02:38:32","date_gmt":"2026-03-11T02:38:32","guid":{"rendered":"https:\/\/mybikething.com\/home\/?post_type=product&#038;p=23516"},"modified":"2026-03-11T02:42:47","modified_gmt":"2026-03-11T02:42:47","slug":"serotta-coeur-dacier-frame-54cm-medium-columbus-c4s-steel-deep-burgundy-3","status":"publish","type":"product","link":"https:\/\/mybikething.com\/home\/product\/serotta-coeur-dacier-frame-54cm-medium-columbus-c4s-steel-deep-burgundy-3\/","title":{"rendered":"Serotta Coeur d&#8217;Acier Frame | 54cm Medium | Columbus C4S Steel | Deep Burgundy"},"content":{"rendered":"<p><span style=\"font-size: 20px; margin-right: 8px;\">\u2b50<\/span><strong>Condition<\/strong><br \/>\nNear mint \u2014 excellent paint throughout with three minor cosmetic flaws: cable rub on the head tube (hand-painted touch-up, covered by cables), minor chain rub on the chainstay, and a small chip on the down tube. All logos are perfect and the finish maintains that distinctive Serotta depth. No structural issues.<\/p>\n<hr \/>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udccf<\/span><strong>Will this fit me?<\/strong><br \/>\nFrame Size: 54cm \u2014 Medium | Compact Geometry<\/p>\n<ul>\n<li>Top Tube: 54cm (center-to-center)<\/li>\n<li>Seat Tube: 54.5cm (top-to-center)<\/li>\n<li>Down Tube: 63cm (center-to-center)<\/li>\n<li>Chainstays: 41.5cm (center-to-center)<\/li>\n<li>Head Tube: 198mm<\/li>\n<li>Rear Dropout Spacing: 130mm<\/li>\n<li>Wheel Size: 700c<\/li>\n<\/ul>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udce6<\/span><strong>What&#8217;s Included<\/strong><\/p>\n<ul>\n<li>Serotta Coeur d&#8217;Acier frame \u2014 near mint condition<\/li>\n<li>Water bottle mounts<\/li>\n<li>Rear derailleur braze-on<\/li>\n<li>Seat clamp<\/li>\n<\/ul>\n<hr \/>\n<div style=\"background-color: #f8f8f8; border: 2px solid #ddd; padding: 15px; margin: 10px 0; border-radius: 5px;\">\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83c\udfc6<\/span><strong>The Story Behind the Frame<\/strong><strong>Serotta Coeur d&#8217;Acier \u2014 Serial #CCD52136 \u2014 Deep Burgundy<\/strong><\/p>\n<p><strong>&#8220;The Heart of American Steel&#8221;<\/strong><\/p>\n<ul>\n<li>Coeur d&#8217;Acier means Heart of Steel in French \u2014 and Ben Serotta meant every word of it. Built in Saratoga Springs, New York, this frame pairs Columbus C4S triple-butted steel in the main triangle with a single-piece carbon wishbone seatstay \u2014 carbon shaped into a curve that steel simply can&#8217;t replicate, capped at both ends to steel and bolted at the dropout. It&#8217;s a detail most people walk right past. The result is a frame that filters road buzz without losing the lateral stiffness that makes a steel bike feel alive under hard efforts. This is American framebuilding at its most considered.<\/li>\n<\/ul>\n<\/div>\n<hr \/>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udeb4<\/span><strong>The Ride<\/strong><br \/>\nColumbus C4S steel delivers that connected, communicative feel serious riders seek \u2014 responsive under power, smooth over distance. The carbon wishbone seatstays absorb the high-frequency chatter that wears you down on long rides without softening the frame&#8217;s handling character. Compact geometry keeps the front end low and the rider engaged. This is a frame that rewards effort and pays back in feel.<\/p>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udd27<\/span><strong>Workshop Wisdom<\/strong><br \/>\nThe single-piece machined chainstay and dropout is worth a closer look \u2014 stronger than welded alternatives and adds its own road damping. The carbon seatstay is molded as one piece, curved to work, with steel caps bolted at the dropouts. Serotta&#8217;s craftsmanship lives in details like these.<\/p>\n<p><img data-recalc-dims=\"1\" decoding=\"async\" style=\"float: left; margin-right: 8px; object-fit: cover; object-position: top;\" src=\"https:\/\/i0.wp.com\/mybikething.com\/wp-content\/uploads\/2023\/12\/vlcsnap-2023-09-08-12h35m00s083.png?resize=40%2C40&#038;ssl=1\" width=\"40\" height=\"40\" \/><strong>Before You Buy &#8211; A Note from Paul<\/strong><br \/>\nEvery frame I sell has been personally inspected and honestly described, but I want you to be 100% confident in your decision. Please take a moment to watch the detailed video included with this listing. Due to the personal nature of frame fit and the cost of shipping, I cannot accept returns. That&#8217;s why I encourage you to reach out to me directly with any questions, whether they&#8217;re about dimensions, condition, or build suggestions. I&#8217;m Paul &#8211; not a chatbot, not a sales team, just a fellow cyclist who wants to make sure this frame finds the right home. Let&#8217;s talk about this frame and make sure it&#8217;s perfect for you before you buy.<\/p>\n<hr \/>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udd27<\/span><strong>What do I need to build this frame?<\/strong><\/p>\n<ul>\n<li>Fork: 1-1\/8&#8243; threadless \u2014 steerer tube minimum 270mm<\/li>\n<li>Headset: External 1-1\/8&#8243; threadless, 34mm cups<\/li>\n<li>Bottom Bracket: 68mm English (BSA) threaded<\/li>\n<li>Stem: 1-1\/8&#8243; threadless<\/li>\n<li>Seatpost: 27.2mm<\/li>\n<li>Front Derailleur: 34.9mm band clamp<\/li>\n<li>Brakes: Standard caliper \/ side pull<\/li>\n<li>Rear spacing: 130mm \u2014 compatible with modern 8, 9, and 10-speed drivetrains<\/li>\n<\/ul>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udccb<\/span><strong>Other Frame Details<\/strong><\/p>\n<ul>\n<li>Material: Columbus C4S triple-butted steel main triangle with single-piece carbon wishbone seatstays<\/li>\n<li>Single-piece machined chainstay and dropout<\/li>\n<li>Made in USA \u2014 Saratoga Springs, New York<\/li>\n<li>Weight: 1795g (3.9 lbs) \u2014 frame only<\/li>\n<li>Compact geometry \u2014 sloping top tube and head tube<\/li>\n<li>Serial #CCD52136<\/li>\n<li>Circa 2000-2002<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Is This Your Bike Thing?<\/strong><br \/>\nOne of the finest American steel frames ever built \u2014 Serotta&#8217;s Heart of Steel in deep burgundy, ready for the build it deserves. Reach out before you buy and let&#8217;s make sure it&#8217;s the right fit.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Keywords:<\/strong> Serotta, Coeur d&#8217;Acier, Columbus C4S, steel road frame, 54cm medium, compact geometry, carbon seatstay, made in USA, Saratoga Springs, Ben Serotta, steel carbon hybrid, road bike frameset, vintage steel, American framebuilding, eBay bike frame<\/p>\n","protected":false},"excerpt":{"rendered":"<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/b_l_7v2MVOc?si=jaU-QLxhggPmI2hk\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"featured_media":21840,"template":"","meta":{"nf_dc_page":""},"product_brand":[],"product_cat":[55,894],"product_tag":[147,791,899,60,161],"product_folder":[],"class_list":{"0":"post-23516","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-a-bike-frames-forks","7":"product_cat-road-frames","8":"product_tag-carbon-fiber","9":"product_tag-frame","10":"product_tag-medium-frame","11":"product_tag-road-bike-frames","12":"product_tag-steel","13":"product_shipping_class-bike-frames","15":"first","16":"instock","17":"taxable","18":"shipping-taxable","19":"purchasable","20":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product\/23516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/media\/21840"}],"wp:attachment":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/media?parent=23516"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_brand?post=23516"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_cat?post=23516"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_tag?post=23516"},{"taxonomy":"product_folder","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_folder?post=23516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}