{"product_id":"fsa-no-55r-1-5-acr-ls-fully-integrated-acr-headset","title":"FSA No. 55R 1.5” ACR LS - Fully Integrated ACR Headset","description":"\u003cp data-start=\"197\" data-end=\"636\"\u003eIf you’re building a clean, modern cockpit with fully hidden cables, the FSA No. 55R 1.5” ACR LS is the headset that keeps everything tight, smooth, and stealthy. Designed for ACR (Aerodynamic Cable Routing) setups, it routes your lines through the headset for a truly integrated front end—without the annoying rotation stop. That means full steering range, cleaner aesthetics, and a premium feel every time you drop into a corner.\u003c\/p\u003e\n\u003cp data-start=\"638\" data-end=\"816\"\u003eBuilt with angular contact bearings for smooth, durable performance and precise tracking, the No. 55R is made for frames specifically designed for ACR-style internal routing.\u003c\/p\u003e\n\u003ch3 data-start=\"818\" data-end=\"836\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"837\" data-end=\"1176\"\u003e\n\u003cli data-start=\"837\" data-end=\"917\"\u003e\n\u003cp data-start=\"839\" data-end=\"917\"\u003e\u003cstrong data-start=\"839\" data-end=\"879\"\u003eFully integrated cable routing (ACR)\u003c\/strong\u003e for a clean, modern front-end setup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"918\" data-end=\"969\"\u003e\n\u003cp data-start=\"920\" data-end=\"969\"\u003e\u003cstrong data-start=\"920\" data-end=\"941\"\u003eNo rotation limit\u003c\/strong\u003e for unrestricted steering\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"970\" data-end=\"1024\"\u003e\n\u003cp data-start=\"972\" data-end=\"1024\"\u003e\u003cstrong data-start=\"972\" data-end=\"989\"\u003eACR top cover\u003c\/strong\u003e for a seamless integrated finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1025\" data-end=\"1099\"\u003e\n\u003cp data-start=\"1027\" data-end=\"1099\"\u003e\u003cstrong data-start=\"1027\" data-end=\"1060\"\u003eAngular contact bearing (ACB)\u003c\/strong\u003e for smooth, long-lasting performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1100\" data-end=\"1176\"\u003e\n\u003cp data-start=\"1102\" data-end=\"1176\"\u003e\u003cstrong data-start=\"1102\" data-end=\"1129\"\u003eSpecific frame required\u003c\/strong\u003e (must be compatible with ACR\/internal routing)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1178\" data-end=\"1189\"\u003eSpecs\u003c\/h3\u003e\n\u003cul data-start=\"1190\" data-end=\"1431\"\u003e\n\u003cli data-start=\"1190\" data-end=\"1217\"\u003e\n\u003cp data-start=\"1192\" data-end=\"1217\"\u003e\u003cstrong data-start=\"1192\" data-end=\"1210\"\u003eHeadtube size:\u003c\/strong\u003e 1.5”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1218\" data-end=\"1253\"\u003e\n\u003cp data-start=\"1220\" data-end=\"1253\"\u003e\u003cstrong data-start=\"1220\" data-end=\"1237\"\u003eBearing spec:\u003c\/strong\u003e 36° \/ 45° ACB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1254\" data-end=\"1303\"\u003e\n\u003cp data-start=\"1256\" data-end=\"1303\"\u003e\u003cstrong data-start=\"1256\" data-end=\"1273\"\u003eHead tube OD:\u003c\/strong\u003e For \u003cstrong data-start=\"1278\" data-end=\"1291\"\u003e55.8mm OD\u003c\/strong\u003e head tube\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1304\" data-end=\"1363\"\u003e\n\u003cp data-start=\"1306\" data-end=\"1363\"\u003e\u003cstrong data-start=\"1306\" data-end=\"1329\"\u003eFork compatibility:\u003c\/strong\u003e \u003cstrong data-start=\"1330\" data-end=\"1361\"\u003e1-1\/8” to 1.5” tapered fork\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1364\" data-end=\"1409\"\u003e\n\u003cp data-start=\"1366\" data-end=\"1409\"\u003e\u003cstrong data-start=\"1366\" data-end=\"1383\"\u003eStack height:\u003c\/strong\u003e \u003cstrong data-start=\"1384\" data-end=\"1394\"\u003e10.9mm\u003c\/strong\u003e (10.4 + 0.5)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1410\" data-end=\"1431\"\u003e\n\u003cp data-start=\"1412\" data-end=\"1431\"\u003e\u003cstrong data-start=\"1412\" data-end=\"1423\"\u003eWeight:\u003c\/strong\u003e \u003cstrong data-start=\"1424\" data-end=\"1431\"\u003e92g\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1433\" data-end=\"1561\"\u003e* \u003cstrong data-start=\"1436\" data-end=\"1459\"\u003eCompatibility Note:\u003c\/strong\u003e Designed to work with the State Bicycle Carbon Road Frame (2026) ACR integrated routing platform.\u003c\/p\u003e","brand":"Livoora","offers":[{"title":"Default Title","offer_id":48573947281633,"sku":"731416174244","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0812\/6850\/6849\/files\/FSANo.55R1.5_ACRLS_FullyIntegratedACRHeadset.jpg?v=1781815684","url":"https:\/\/livoora.site\/products\/fsa-no-55r-1-5-acr-ls-fully-integrated-acr-headset","provider":"Livoora","version":"1.0","type":"link"}