{"product_id":"wolf-tooth-headset-upper-knock-block-28-6-8mm-black","title":"Wolf Tooth Headset Upper Knock Block - 28.6 8mm Black","description":"\u003cstyle\u003e.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}\u003c\/style\u003e\u003cdiv class=\"top\"\u003eWolf Tooth Headset Upper Knock Block - 28.6 8mm Black. Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups.\u003cli\u003eDesigned to work with Treks Knock Block system\u003c\/li\u003e\n\u003cli\u003eThe top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager\u003c\/li\u003e\n\u003cli\u003eIf spacers are needed you will need to use special Knock Block compatible spacers with notch features\u003c\/li\u003e\n\u003cli\u003eThis product is the upper headset only\u003c\/li\u003e\n\u003cli\u003eLower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately\u003c\/li\u003e\n\u003c\/div\u003e\u003cstyle\u003etable{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;}\u003c\/style\u003e\u003cdiv class=\"desc\"\u003e\u003cul\u003e\u003cli\u003e TECH SPECS\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBearing Type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eCartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ekeyword search\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eTrek Knock Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUpper Stack Height\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS.H.I.S. Stem Clamp Diameter\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e28.6 Threadless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Wolf Tooth","offers":[{"title":"Default Title","offer_id":49362926043410,"sku":"HD0284","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/3534\/5682\/files\/HD0284.jpg?v=1717094259","url":"https:\/\/lennysbikeshop.com\/products\/wolf-tooth-headset-upper-knock-block-28-6-8mm-black","provider":"Lenny's Bike Shop","version":"1.0","type":"link"}