{"product_id":"mk0-is-headsets-integrated-standard","title":"MK0 IS Headsets - Integrated Standard","description":"\u003cp\u003eWolf Tooth IS41 MK0 Upper Headsets feature the shortest possible stack height to maintain the best-in-class strength, sealing, and performance found in Wolf Tooth Premium Headsets. The result is a 44% reduction in weight from Wolf Tooth Premium Headsets, with increased performance and new aesthetics with visible machine paths to align with the MK0 line. \u003c\/p\u003e\n\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 IS headsets are for frames with molded-in internal bearing cups. 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 IS (Integrated Standard) headsets with 41mm upper and 52mm lower outer bearing 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\u003eIS42 is not compatible with Specialized mountain bikes or bikes using the Campagnolo Hiddenset standard\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.sbs\/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 src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/IS42U-5MM-MK0-SGR_dimensions.svg?v=1774469736\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"PdpSqImgLinks\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/headset-fitment-guide\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/MeasureHeadset_medium.jpg?v=1550605546\" alt=\"\" width=\"155\" height=\"155\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/products\/wolf-tooth-precision-headset-small-parts\"\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/ReplacementParts-Headset_160x160.jpg?v=1590086563\" width=\"155\" height=\"155\"\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/www.wolftoothcomponents.sbs\/pages\/headset-technical-information\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/Headset_Tech_c3897e65-a523-4350-8aff-9290078bc929_480x480.jpg?v=1590091876\" alt=\"\" width=\"155\" height=\"155\"\u003e\u003c\/a\u003e \u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eUpper assembly features: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eSuper slammed, super sealed - 4mm stack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"p1\"\u003eUppers and lowers sold separately\u003c\/p\u003e\n\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\u003cli\u003e\n\u003cp class=\"p1\"\u003eHeadset includes stem cap, custom hollow bolt and Enduro stainless steel sealed bearings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\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\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.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\/products\/wolf-tooth-performance-is-headsets-integrated-standard\"\u003ePerformance IS 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\u003e IS41 • 29 g  | IS42\u003cmeta charset=\"utf-8\"\u003e • 30 g\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_30.2X41X6.5_FOR_WEBSITE_1.pdf?v=1740513597\" 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 MAX with light grease on threads only. Use a torque wrench.\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\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 \/ IS41\/28.6 7mm Stack \/ Shadow Gray","offer_id":41893355388963,"sku":"IS41U-5MM-MK0-SGR","price":94.95,"currency_code":"USD","in_stock":true},{"title":"Upper \/ IS42\/28.6 7mm Stack \/ Shadow Gray","offer_id":41893355421731,"sku":"IS42U-5MM-MK0-SGR","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0230\/9291\/files\/IS41U-5MM-MK0-SGR.webp?v=1773936618","url":"https:\/\/www.wolftoothcomponents.sbs\/products\/mk0-is-headsets-integrated-standard","provider":"Wolf Tooth Components","version":"1.0","type":"link"}