{"id":14640,"date":"2023-12-05T19:55:51","date_gmt":"2023-12-05T19:55:51","guid":{"rendered":"https:\/\/mybikething.com\/home\/?post_type=product&#038;p=14640"},"modified":"2026-03-11T01:28:53","modified_gmt":"2026-03-11T01:28:53","slug":"giant-ocr-c1-carbon-fiber-frame-and-fork-large","status":"publish","type":"product","link":"https:\/\/mybikething.com\/home\/product\/giant-ocr-c1-carbon-fiber-frame-and-fork-large\/","title":{"rendered":"Giant OCR C1 Carbon Frameset | 57cm Large | 2005 | FormulaOne Composite | Excellent"},"content":{"rendered":"<p><span style=\"font-size: 20px; margin-right: 8px;\">\u2b50<\/span><strong>Condition<\/strong><br \/>\nExcellent \u2014 minimal wear consistent with light use. Minor cosmetic imperfections on the logo decal on the top tube and racing stripes on the rear stays. The carbon weave shows beautifully through the gloss finish. <strong>No structural issues, cracks, or damage.<\/strong> All threads in excellent condition.<\/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: 57cm \u2014 Large<\/p>\n<ul>\n<li>Top Tube: 57cm (center-to-center)<\/li>\n<li>Seat Tube: 57cm (top-to-center)<\/li>\n<li>Down Tube: 66cm (center-to-center)<\/li>\n<li>Chainstays: 43cm (center-to-center)<\/li>\n<li>Rear Dropout Spacing: 130mm<\/li>\n<li>Front Dropout Spacing: 100mm<\/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>Frame \u2014 FormulaOne carbon composite, excellent condition<\/li>\n<li>Fork \u2014 carbon with aluminum steerer, original to frame<\/li>\n<li>All cable guides<\/li>\n<li>Rear derailleur hanger<\/li>\n<li>Front derailleur braze-on mount<\/li>\n<li>Water bottle cage bolts<\/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>Giant OCR C1 \u2014 Serial #GA5C397 \u2014 2005 \u2014 FormulaOne Composite<\/strong><\/p>\n<p><strong>&#8220;Carbon Before Carbon Was Cheap&#8221;<\/strong><\/p>\n<ul>\n<li>In 2005 the OCR C1 was Giant&#8217;s flagship road frame \u2014 full carbon composite construction at a time when most cyclists were still riding aluminum. Giant&#8217;s FormulaOne layup delivered a genuinely stiff, light frameset with wishbone-shaped rear stays that took the edge off road chatter without sacrificing power transfer. These didn&#8217;t hang around in shops. Finding a clean large-size C1 frameset today is genuinely difficult \u2014 there are almost none on the market.<\/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 \/>\nThe OCR C1 rides with the confident directness you&#8217;d expect from a race-oriented carbon frame \u2014 quick to accelerate, precise in corners, and composed at speed. The oversized junction points put power straight to the rear wheel, while the flattened rear stays absorb enough road buzz to stay comfortable on longer rides. This is a frame that rewards effort.<\/p>\n<p><span style=\"font-size: 20px; margin-right: 8px;\">\ud83d\udd27<\/span><strong>Workshop Wisdom<\/strong><br \/>\nThe OCR C1 uses Giant&#8217;s integrated headset system with a 47mm OD head tube. The correct replacement headset is the <strong>FSA No. 11 AGY<\/strong> (Giant part #1310-NO11AQ-901), available on Amazon and through GiantBikeSpares.com \u2014 straightforward to source and install. Everything else on this frame is completely standard.<\/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>Headset: FSA No. 11 AGY \u2014 integrated, 47mm OD headtube, 1-1\/8&#8243; steerer (Giant part #1310-NO11AQ-901, available on Amazon)<\/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: Braze-on mount<\/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: FormulaOne carbon composite<\/li>\n<li>Weight: Frame + fork approximately 3lbs<\/li>\n<li>Internal cable routing<\/li>\n<li>Original gloss clear coat over visible carbon weave with racing stripe accents<\/li>\n<li>Serial #GA5C397<\/li>\n<li>2005 model year<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Is This Your Bike Thing?<\/strong><br \/>\nOne of the cleanest large-size OCR C1 framesets you&#8217;ll find \u2014 Giant&#8217;s flagship carbon from an era when this was the real deal. Reach out before you buy and let&#8217;s make sure it&#8217;s the right fit.<\/p>\n<p>Giant, OCR C1, FormulaOne composite, carbon road frame, 57cm large, 2005 Giant, carbon frameset, threadless, BSA bottom bracket, caliper brakes, vintage carbon, road bike frame, eBay bike frame, Giant carbon bicycle<\/p>\n","protected":false},"excerpt":{"rendered":"<p><iframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/PaevAWxE2wk?si=mlsdFAziQLpEtSpP\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"featured_media":14641,"template":"","meta":{"nf_dc_page":""},"product_brand":[],"product_cat":[55,894],"product_tag":[6072,3337,1404,630,2317,3339,660,5355,3852,177,147,6073,6071,2913,6069,440,6070,791,152,6074,1403,58,898,3336,3338,596,127,242,4459,60,280,2921],"product_folder":[911],"class_list":{"0":"post-14640","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-2005-giant","9":"product_tag-3337","10":"product_tag-3-lbs","11":"product_tag-57cm","12":"product_tag-57cm-large","13":"product_tag-bicycle-frame","14":"product_tag-black","15":"product_tag-bsa-bottom-bracket","16":"product_tag-caliper-brakes","17":"product_tag-carbon","18":"product_tag-carbon-fiber","19":"product_tag-carbon-frameset","20":"product_tag-carbon-road-frame","21":"product_tag-custom","22":"product_tag-ebay-bike-frame","23":"product_tag-excellent","24":"product_tag-formulaone-composite","25":"product_tag-frame","26":"product_tag-giant","27":"product_tag-giant-carbon-bicycle","28":"product_tag-giant-ocr-c1-frame-and-fork","29":"product_tag-large","30":"product_tag-large-frame","31":"product_tag-ocr-c1","32":"product_tag-performance","33":"product_tag-race","34":"product_tag-racing","35":"product_tag-road","36":"product_tag-road-bike-frame","37":"product_tag-road-bike-frames","38":"product_tag-threadless","39":"product_tag-vintage-carbon","40":"product_shipping_class-bike-frames","42":"first","43":"instock","44":"taxable","45":"shipping-taxable","46":"purchasable","47":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product\/14640","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\/14641"}],"wp:attachment":[{"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/media?parent=14640"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_brand?post=14640"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_cat?post=14640"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_tag?post=14640"},{"taxonomy":"product_folder","embeddable":true,"href":"https:\/\/mybikething.com\/home\/wp-json\/wp\/v2\/product_folder?post=14640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}