{"product_id":"wolf-tooth-performance-zs-headsets-zero-stack-purple","title":"Wolf Tooth Performance ZS Headsets - Zero Stack - Purple","description":"\u003cp\u003eWolf Tooth headsets are machined here in our Minnesota shop with aircraft-grade 6061 aluminum. They are designed to be lightweight, strong, and durable. Performance Headsets with Enduro black oxide bearings have a one-year warranty. Our headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. Available in a variety of colors. These ZS headsets are for frames with internal bearing cups that are pressed into the frame. \u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny frame that uses ZS (Zero Stack) headsets with 44mm upper and 56mm lower head tube inner diameter.\u003c\/li\u003e\n\u003cli\u003eUppers and lowers sold separately.\u003c\/li\u003e\n\u003cli\u003eEnduro black oxide steel sealed bearings included on both the upper and lower. \u003c\/li\u003e\n\u003cli\u003eUpper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/collections\/headset-related\/products\/wolf-tooth-precision-headset-small-parts?variant=7193253511203\" title=\"compression plug for forks with carbon steerer tubes\"\u003ecompression plug\u003c\/a\u003e (sold separately). (Never use a star nut on a carbon steerer tube).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"PdpSqImgLinks\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/headset-fitment-guide\"\u003e\u003cimg height=\"155\" width=\"155\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/MeasureHeadset_medium.jpg?v=1550605546\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/products\/wolf-tooth-precision-headset-small-parts\"\u003e\u003cimg height=\"155\" width=\"155\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/ReplacementParts-Headset_160x160.jpg?v=1590086563\" style=\"float: none;\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/headset-technical-information\"\u003e\u003cimg height=\"155\" width=\"155\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/Headset_Tech_c3897e65-a523-4350-8aff-9290078bc929_480x480.jpg?v=1590091876\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/color-shop\" title=\"Wolf Tooth color shop - choose color components for your bike\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/ColorShopButton_0c05b716-d5a6-41e3-9306-7c5aba20041f_480x480.jpg?v=1650986151\" alt=\"Color Shop - Choose Wolf Tooth anodized color components for your bike\" width=\"155\" height=\"186\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/WT_Headset_stacked_Top_blackoxide_Labels_f4fe775e-249c-4d6e-9420-d31d0dca75f4.jpg?v=1744818977\" alt=\"Wolf Tooth Headset parts\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003eUpper assembly features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUltralight stem cap with integrated spacer plus an aluminum bolt and a star nut.\u003c\/li\u003e\n\u003cli\u003e6mm top cover = 6mm total stack.\u003c\/li\u003e\n\u003cli\u003eO-ring seal prevents water intrusion around steerer tube.\u003c\/li\u003e\n\u003cli\u003eCustom-molded upper lip seal provides additional protection for upper bearing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLower assembly features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCustom-molded dual-lip seal on the crown race protects lower bearing in the toughest conditions.\u003c\/li\u003e\n\u003cli\u003eAll components precision machined in-house at Wolf Tooth from aircraft grade aluminum to ensure the highest level of quality.\u003c\/li\u003e\n\u003cli\u003eService and additional parts available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eRecommendations\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/products\/crown-race-installation-adapter\"\u003eWolf Tooth crown race installation adapter\u003c\/a\u003e will help avoid damage to crown race seals.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/products\/wolf-tooth-headset-spacers\"\u003ePrecision headset spacers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/products\/crown-race-installation-adapter\"\u003eWolf Tooth crown race installation adapter\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/collections\/headset-related\/products\/wolf-tooth-premium-zs-headsets-zero-stack\"\u003ePremium ZS Headsets\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Specs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e55-58g\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e\u003cspan\u003e 6061 aluminum\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eBevel Angle: \u003c\/strong\u003e\u003ca rel=\"noopener\" title=\"PDF drawing showing the headset bearing dimensions including the bevel angle\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/BEARING_HEADSET_DIMENSIONS.PDF?v=1739574989\" target=\"_blank\"\u003e36 x 45 degrees\u003c\/a\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eStem Cap Bolt Torque Spec:\u003c\/strong\u003e 2-3 Nm with light grease on threads only\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the\u003cspan\u003e \u003c\/span\u003eUSA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/wolf-tooth-patents-and-trademarks\"\u003ePatent and trademark information\u003c\/a\u003e\u003c\/p\u003e","brand":"Wolf Tooth","offers":[{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Classic Purple","offer_id":40727414243363,"sku":"373","price":20.96,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Classic Purple","offer_id":40727414538275,"sku":"ZS56L-40-PRP-B","price":20.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/products\/WT-ZS44U-5MM-PRP-01.jpg?v=1702131290","url":"https:\/\/www.wolftoothcomponents.sbs\/products\/wolf-tooth-performance-zs-headsets-zero-stack-purple","provider":"Wolf Tooth Components","version":"1.0","type":"link"}