{"product_id":"wolf-tooth-mk0-is-headset-top-assemblies","title":"Wolf Tooth MK0 IS Headset Top Assemblies","description":"\u003cp\u003eMK0 items represent a refined approach to component engineering. All items are made in small batches and feature premium raw materials, labor-intensive CNC machining, and a new design language. The result is components with a refreshed aesthetic and increased performance gains.\u003c\/p\u003e\n\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\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAny frame that uses IS (Integrated Standard) headsets with 41mm upper and 52mm lower outer bearing diameter\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUppers and lowers sold separately \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnduro stainless steel sealed bearings included on both the upper and lower\u003cbr\u003eIS42 is not compatible with Specialized mountain bikes or bikes using the\u003c\/li\u003e\n\u003cli\u003eCampagnolo Hiddenset standard\u003cbr\u003e\n\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 compression plug (sold separately). (Never use a star nut on a carbon steerer tube)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wolf Tooth","offers":[{"title":"IS41\/28.6 \/ Shadow Grey","offer_id":47107501752404,"sku":"IS41U-5MM-MK0-SGR","price":114.0,"currency_code":"USD","in_stock":false},{"title":"IS42\/28.6 \/ Shadow Grey","offer_id":47107503226964,"sku":"IS42U-5MM-MK0-SGR","price":114.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0558\/1058\/8756\/files\/IS41U-5MM-MK0-SGR.png?v=1781895380","url":"https:\/\/www.fullcycle.ca\/en-us\/products\/wolf-tooth-mk0-is-headset-top-assemblies","provider":"Full Cycle","version":"1.0","type":"link"}