{"title":"Headsets and Headset Spacers","description":"","products":[{"product_id":"wolf-tooth-premium-zs-headsets-zero-stack","title":"Wolf Tooth Premium ZS Headsets - Zero Stack","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. 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. Premium Headsets with Enduro stainless steel bearings have a lifetime warranty on the bearings.\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 stainless 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 title=\"compression plug for forks with carbon steerer tubes\" href=\"https:\/\/www.wolftoothcomponents.com\/collections\/headset-related\/products\/wolf-tooth-precision-headset-small-parts?variant=7193253511203\"\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\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Wolf Tooth Headset parts\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/WT_Headset_stacked_Bottom_stainless_Labels_de8400a9-3e5d-4418-bae4-2808f9566c7b.jpg?v=1744818947\"\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\u003e6, 15 and 25 mm stack height top cover options  (6mm cover = 6mm total stack, 15mm cover = 15 total stack, 25mm cover = 25mm 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\u003ch2\u003eRecommendations\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.wolftoothcomponents.com\/products\/crown-race-installation-adapter\"\u003eWolf Tooth crown race installation adapter\u003cspan\u003e \u003c\/span\u003e\u003c\/a\u003ewill help avoid damaging the crown race seals.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.com\/products\/wolf-tooth-headset-spacers\"\u003ePrecision headset spacers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.com\/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.com\/products\/wolf-tooth-performance-zs-headsets-zero-stack\"\u003ePerformance ZS Headset\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 href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/BEARING_HEADSET_DIMENSIONS.PDF?v=1739574989\" title=\"PDF drawing showing the headset bearing dimensions including the bevel angle\" rel=\"noopener\" 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 \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.com\/pages\/wolf-tooth-patents-and-trademarks\"\u003ePatent and trademark information\u003c\/a\u003e\u003c\/p\u003e","brand":"Wolf Tooth Components","offers":[{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Black","offer_id":46402830958781,"sku":"ZS44U-5MM-BLK","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Red","offer_id":46402830991549,"sku":"ZS44U-5MM-RED","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Blue","offer_id":46402831024317,"sku":"ZS44U-5MM-BLU","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Orange","offer_id":46402831057085,"sku":"ZS44U-5MM-ORG","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Gold","offer_id":46402831089853,"sku":"ZS44U-5MM-GLD","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Raw Silver","offer_id":46402831122621,"sku":"ZS44U-5MM-RSIL","price":74.95,"currency_code":"USD","in_stock":false},{"title":"Upper \/ ZS44\/28.6 6mm Stack \/ Ultraviolet Purple","offer_id":46402831155389,"sku":"ZS44U-5MM-PRU","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 15mm Stack \/ Black","offer_id":46402831188157,"sku":"ZS44U-15MM-BLK","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 25mm Stack \/ Black","offer_id":46402831220925,"sku":"ZS44U-25MM-BLK","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 25mm Stack \/ Red","offer_id":46402831253693,"sku":"ZS44U-25MM-RED","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ ZS44\/28.6 25mm Stack \/ Gold","offer_id":46402831351997,"sku":"ZS44U-25MM-GLD","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Black","offer_id":46402831384765,"sku":"ZS56L-40-BLK","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Red","offer_id":46402831417533,"sku":"ZS56L-40-RED","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Blue","offer_id":46402831450301,"sku":"ZS56L-40-BLU","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Orange","offer_id":46402831483069,"sku":"ZS56L-40-ORG","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Gold","offer_id":46402831515837,"sku":"ZS56L-40-GLD","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Raw Silver","offer_id":46402831548605,"sku":"ZS56L-40-RSIL","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ ZS56\/40 \/ Ultraviolet Purple","offer_id":46402831581373,"sku":"ZS56L-40-PRU","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1583\/1007\/files\/wolf-tooth-premium-zs-headsets-zero-stack-7461213.jpg?v=1771505181"},{"product_id":"wolf-tooth-premium-ec44-internal-aero-headset-for-enve-in-route-system","title":"Wolf Tooth Premium EC44 Internal Aero Headset for ENVE IN-Route System","description":"\u003cp\u003eWolf Tooth Premium Internal Headsets for ENVE IN-Route System are designed and machined right here in our Minnesota headquarters with aircraft-grade 6061 aluminum. They are designed to have an ultra-low stack height, to be lightweight, and durable. 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. Premium Headsets with Enduro stainless steel bearings carry a lifetime warranty on the bearings.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for the ENVE IN-Route System with a 44mm straight headtube and a 1-1\/8” to 1.5” tapered steerer tube\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e(FITS ONLY ENVE In-Route System)\u003c\/strong\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eUse top cap and split spacers provided with ENVE stems and one-piece cockpits.\u003c\/li\u003e\n\u003cli\u003eUse the compression plug that comes with your fork.\u003c\/li\u003e\n\u003cli\u003eSold as a complete upper and lower EC44 Headset.\u003c\/li\u003e\n\u003cli\u003eEnduro stainless steel bearings included.\u003c\/li\u003e\n\u003cli\u003eTwo 0.5mm spacers are included to dial in headset compression if necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Specs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e\u003cspan\u003e 6061 Aluminum\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal Stack Upper Headset - 15.8mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal Stack Lower Headset - 12.25mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFor Headtube Internal Diameter - 44mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCup External Diameter - 56.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWeights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eUpper Headset - 69g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLower Headset - 47g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eComplete Headset - 116g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eBevel Angle: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/BEARING_HEADSET_DIMENSIONS.PDF?v=1739574989\" title=\"PDF drawing showing the headset bearing dimensions including the bevel angle\" rel=\"noopener\" target=\"_blank\"\u003e36 x 45 degrees\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePremium Enduro stainless steel bearings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvailable in seven Wolf Tooth anodized colors to match other Wolf Tooth components.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDesigned with the Wolf Tooth triple-sealed system present on all other Wolf Tooth headsets:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInternal o-ring top cap seal prevents water intrusion around the steerer tube.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCustom-molded upper cup lip seal provides additional protection for the upper bearing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCustom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the\u003cspan\u003e \u003c\/span\u003eUSA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.com\/pages\/wolf-tooth-patents-and-trademarks\"\u003ePatent and trademark information\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wolf Tooth Components","offers":[{"title":"EC44 Upper \u0026 Lower Set \/ Gold","offer_id":46402829516989,"sku":"EC44U-L-IR-GLD","price":219.95,"currency_code":"USD","in_stock":false},{"title":"EC44 Upper \u0026 Lower Set \/ Orange","offer_id":46402829549757,"sku":"EC44U-L-IR-ORG","price":219.95,"currency_code":"USD","in_stock":true},{"title":"EC44 Upper \u0026 Lower Set \/ Red","offer_id":46402829582525,"sku":"EC44U-L-IR-RED","price":219.95,"currency_code":"USD","in_stock":true},{"title":"EC44 Upper \u0026 Lower Set \/ Ultraviolet Purple","offer_id":46402829615293,"sku":"EC44U-L-IR-PRU","price":219.95,"currency_code":"USD","in_stock":false},{"title":"EC44 Upper \u0026 Lower Set \/ Blue","offer_id":46402829648061,"sku":"EC44U-L-IR-BLU","price":219.95,"currency_code":"USD","in_stock":false},{"title":"EC44 Upper \u0026 Lower Set \/ Raw Silver","offer_id":46402829680829,"sku":"EC44U-L-IR-RSIL","price":219.95,"currency_code":"USD","in_stock":false},{"title":"EC44 Upper \u0026 Lower Set \/ Black","offer_id":46402829713597,"sku":"EC44U-L-IR-BLK","price":219.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1583\/1007\/files\/wolf-tooth-premium-ec44-internal-aero-headset-for-enve-in-route-system-9026157.jpg?v=1771505179"},{"product_id":"wolf-tooth-premium-is52-internal-aero-headset-for-enve-in-route-system","title":"Wolf Tooth Premium IS52 Internal Aero Headset for ENVE IN-Route System","description":"\u003cp\u003eWolf Tooth Premium Internal Headsets for ENVE IN-Route System are designed and machined right here in our Minnesota headquarters with aircraft-grade 6061 aluminum. They are designed to have an ultra-low stack height, to be lightweight, and durable. 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. Premium Headsets with Enduro stainless steel bearings carry a lifetime warranty on the bearings.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for the ENVE IN-Route System and compatible with bikes that use an IS52 upper \/ lower headset and a 1-1\/8” to 1.5” tapered steerer tube\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e(FITS ONLY ENVE In-Route System)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUse top cap and split spacers provided with ENVE stems and one-piece cockpits.\u003c\/li\u003e\n\u003cli\u003eUse the compression plug that comes with your fork.\u003c\/li\u003e\n\u003cli\u003eSold as a complete upper and lower IS52 Headset.\u003c\/li\u003e\n\u003cli\u003eEnduro stainless steel bearings included.\u003c\/li\u003e\n\u003cli\u003eTwo 0.5mm spacers are included to dial in headset compression if necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Specs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e\u003cspan\u003e 6061 Aluminum\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal Stack Upper Headset - 3.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eTotal Stack Lower Headset - 0mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFor Headtube Internal Diameter - 52mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e52mm 36x45 Upper And Lower Bearings\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWeights:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eUpper Headset - 50g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eLower Headset - 28g\u003c\/span\u003e\u003c\/li\u003e\n\u003cli dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eComplete Headset - 78g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePremium Enduro stainless steel bearings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvailable in seven Wolf Tooth anodized colors to match other Wolf Tooth components.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDesigned with the Wolf Tooth triple-sealed system present on all other Wolf Tooth headsets:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInternal o-ring top cap seal prevents water intrusion around the steerer tube.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCustom-molded upper cup lip seal provides additional protection for the upper bearing.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCustom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eContact sales@wolftoothcomponents.com for fitment and compatibility questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the\u003cspan\u003e \u003c\/span\u003eUSA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.com\/pages\/wolf-tooth-patents-and-trademarks\"\u003ePatent and trademark information\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wolf Tooth Components","offers":[{"title":"IS52 Upper \u0026 Lower Set \/ Black","offer_id":46402830729405,"sku":"IS52U-L-IR-BLK","price":179.95,"currency_code":"USD","in_stock":false},{"title":"IS52 Upper \u0026 Lower Set \/ Red","offer_id":46402830762173,"sku":"IS52U-L-IR-RED","price":179.95,"currency_code":"USD","in_stock":true},{"title":"IS52 Upper \u0026 Lower Set \/ Blue","offer_id":46402830794941,"sku":"IS52U-L-IR-BLU","price":179.95,"currency_code":"USD","in_stock":true},{"title":"IS52 Upper \u0026 Lower Set \/ Gold","offer_id":46402830827709,"sku":"IS52U-L-IR-GLD","price":179.95,"currency_code":"USD","in_stock":true},{"title":"IS52 Upper \u0026 Lower Set \/ Orange","offer_id":46402830860477,"sku":"IS52U-L-IR-ORG","price":179.95,"currency_code":"USD","in_stock":true},{"title":"IS52 Upper \u0026 Lower Set \/ Raw Silver","offer_id":46402830893245,"sku":"IS52U-L-IR-RSIL","price":179.95,"currency_code":"USD","in_stock":false},{"title":"IS52 Upper \u0026 Lower Set \/ Ultraviolet Purple","offer_id":46402830926013,"sku":"IS52U-L-IR-PRU","price":179.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1583\/1007\/files\/wolf-tooth-premium-is52-internal-aero-headset-for-enve-in-route-system-7008943.jpg?v=1771505179"},{"product_id":"wolf-tooth-premium-ec-headsets-external-cup","title":"Wolf Tooth Premium EC Headsets - External Cup","description":"\u003cp\u003eWolf Tooth headsets are machined in the USA with aircraft-grade 6061 aluminum. Our headsets have three levels of superior custom sealing to protect bearings from the elements and prolong the life of the headset. They are designed to be lightweight, strong, and durable. Available in a variety of colors. These EC headsets are for frames with external bearing cups, which places the bearing outside of the frame with these headsets. Premium Headsets with Enduro stainless steel bearings have a lifetime warranty on the bearings.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStack height designation for EC headsets includes 10mm cup (see tech specs).\u003c\/li\u003e\n\u003cli\u003eAny frame that uses an external cup headset with a 34mm upper head tube. inner diameter and 34mm, 44mm, or 49mm lower head tube inner diameter\u003c\/li\u003e\n\u003cli\u003eUppers and lowers sold separately.\u003c\/li\u003e\n\u003cli\u003eEnduro stainless 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.com\/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\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eA \u003ca href=\"https:\/\/www.wolftoothcomponents.com\/products\/crown-race-adapters\" title=\"Crown Race Adapter\"\u003ecrown race adapter\u003c\/a\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e(sold separately)\u003c\/span\u003ewill allow you to use forks with smaller 1-1\/8\" or 1-1\/4\" steerer tubes with a larger 1-1\/2\" bottom headset cup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"gmail-il\"\u003eEC34 Lowers are not compatible with Surly 1-1\/8\" straight steerer\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"gmail-il\"\u003eforks\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"PdpSqImgLinks\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Wolf Tooth Headset parts\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/WT_Headset_stacked_Bottom_stainless_Labels_de8400a9-3e5d-4418-bae4-2808f9566c7b.jpg?v=1744818947\"\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\u003e5mm cover = 16mm total stack, 15mm cover = 25mm total stack, 25mm cover = 35mm total stack.\u003c\/li\u003e\n\u003cli\u003eO-ring seal prevents water intrusion around the 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 to protect lower bearing in the toughest conditions.\u003c\/li\u003e\n\u003cli\u003e12.25mm stack.\u003c\/li\u003e\n\u003cli\u003eService and additional parts available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRecommendations\u003c\/h2\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.wolftoothcomponents.com\/products\/crown-race-installation-adapter\"\u003eWolf Tooth crown race installation adapter\u003c\/a\u003e will help avoid damaging the crown race seals.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.com\/products\/wolf-tooth-headset-spacers\"\u003ePrecision headset spacers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.com\/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.com\/products\/wolf-tooth-performance-ec-headsets-external-cup\"\u003ePerformance EC Headset\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Specs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003eEC44 lower • 45g\u003cstrong\u003e  | \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eEC49 lower •  54g\u003cstrong\u003e  | \u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eEC34 lower • 37g \u003cstrong\u003e |\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eEC34 5mm upper • 64g\u003cstrong\u003e  |\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eEC34 15mm Upper • 70g \u003cstrong\u003e | \u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEC34 25mm upper • 79g\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\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\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e2-3 Nm with light grease on threads only\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in the USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.wolftoothcomponents.com\/pages\/wolf-tooth-patents-and-trademarks\"\u003ePatent and trademark information\u003c\/a\u003e\u003c\/p\u003e","brand":"Wolf Tooth Components","offers":[{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Black","offer_id":46402841444541,"sku":"EC34U-5MM-BLK","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Red","offer_id":46402841477309,"sku":"EC34U-5MM-RED","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Blue","offer_id":46402841510077,"sku":"EC34U-5MM-BLU","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Orange","offer_id":46402841542845,"sku":"EC34U-5MM-ORG","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Gold","offer_id":46402841575613,"sku":"EC34U-5MM-GLD","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Raw Silver","offer_id":46402841608381,"sku":"EC34U-5MM-RSIL","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 16mm Stack \/ Ultraviolet Purple","offer_id":46402841641149,"sku":"EC34U-5MM-PRU","price":74.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 25mm Stack \/ Black","offer_id":46402841673917,"sku":"EC34U-15MM-BLK","price":69.95,"currency_code":"USD","in_stock":false},{"title":"Upper \/ EC34\/28.6 25mm Stack \/ Orange","offer_id":46402841739453,"sku":"EC34U-15MM-ORG","price":69.95,"currency_code":"USD","in_stock":false},{"title":"Upper \/ EC34\/28.6 35mm Stack \/ Black","offer_id":46402841772221,"sku":"EC34U-25MM-BLK","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ EC34\/28.6 35mm Stack \/ Gold","offer_id":46402841870525,"sku":"EC34U-25MM-GLD","price":69.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Black","offer_id":46402841903293,"sku":"EC34L-30-BLK","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Red","offer_id":46402841936061,"sku":"EC34L-30-RED","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Blue","offer_id":46402841968829,"sku":"EC34L-30-BLU","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Orange","offer_id":46402842001597,"sku":"EC34L-30-ORG","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Gold","offer_id":46402842034365,"sku":"EC34L-30-GLD","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Raw Silver","offer_id":46402842067133,"sku":"EC34L-30-RSIL","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC34\/30 \/ Ultraviolet Purple","offer_id":46402842099901,"sku":"EC34L-30-PRU","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC44\/40 \/ Black","offer_id":46402842132669,"sku":"EC44L-40-BLK","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC44\/40 \/ Red","offer_id":46402842165437,"sku":"EC44L-40-RED","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC44\/40 \/ Blue","offer_id":46402842198205,"sku":"EC44L-40-BLU","price":64.95,"currency_code":"USD","in_stock":false},{"title":"Lower \/ EC44\/40 \/ Orange","offer_id":46402842230973,"sku":"EC44L-40-ORG","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC44\/40 \/ Gold","offer_id":46402842263741,"sku":"EC44L-40-GLD","price":64.95,"currency_code":"USD","in_stock":false},{"title":"Lower \/ EC44\/40 \/ Raw Silver","offer_id":46402842296509,"sku":"EC44L-40-RSIL","price":64.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC44\/40 \/ Ultraviolet Purple","offer_id":46402842329277,"sku":"EC44L-40-PRU","price":64.95,"currency_code":"USD","in_stock":false},{"title":"Lower \/ EC49\/40 \/ Black","offer_id":46402842362045,"sku":"EC49L-40-BLK","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC49\/40 \/ Red","offer_id":46402842394813,"sku":"EC49L-40-RED","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC49\/40 \/ Orange","offer_id":46402842460349,"sku":"EC49L-40-ORG","price":59.95,"currency_code":"USD","in_stock":true},{"title":"Lower \/ EC49\/40 \/ Gold","offer_id":46402842493117,"sku":"EC49L-40-GLD","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1583\/1007\/files\/wolf-tooth-premium-ec-headsets-external-cup-2529970.jpg?v=1771505172"}],"url":"https:\/\/litespeed.com\/collections\/headsets-and-headset-spacers.oembed","provider":"Litespeed Bicycles","version":"1.0","type":"link"}