{"product_id":"hdup0078","title":"Wolf Tooth MK0 IS Headsets - Integrated Standard Upper IS41\/28.6 7mm Stack Shadow Gray","description":"\u003cdiv id=\"seqbpdescription\"\u003e\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. . Wolf 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. Compatibility Any frame that uses IS (Integrated Standard) headsets with 41mm upper and 52mm lower outer bearing diameter Uppers and lowers sold separately Enduro stainless steel sealed bearings included on both the upper and lower IS42 is not compatible with Specialized mountain bikes or bikes using the Campagnolo Hiddenset standard Upper 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) Upper assembly features: . Super slammed, super sealed - 4mm stack. Uppers and lowers sold separately. O-ring seal prevents water intrusion around steerer tube. Custom-molded upper lip seal provides additional protection for upper bearing. Headset includes stem cap, custom hollow bolt and Enduro stainless steel sealed bearings. Recommendations The Wolf Tooth crown race installation adapter will help avoid damaging the crown race seals. Related Products Precision headset spacers Wolf Tooth crown race installation adapter Performance IS Headsets Tech Specs Weight: IS41 29 g | IS42 30 gMaterial: 6061 aluminum Bevel Angle: 36 x 45 degrees Stem Cap Bolt Torque Spec: 2-3 Nm MAX with light grease on threads only. Use a torque wrench. Made in the USA. Patent and trademark information.Upper IS41\/28.6 7mm Stack Shadow Gray\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eMK0 IS upper headset feature a super low 4mm of stack made possible by the extra machining and new profile that result in a 44% reduction in aluminum weight without compromising strength and durability\u003c\/li\u003e\n\u003cli\u003eO-ring seal prevents water intrusion around steerer tube to eliminate corrosion that results in longevity of the headset\u003c\/li\u003e\n\u003cli\u003eCustom-molded upper lip seal provides additional protection for the premium Enduro stainless steel upper 36 x 45 degree beveled angle bearing \u003c\/li\u003e\n\u003cli\u003eShips with a star nut which can only be used on forks with steel or aluminum steerer tubes (Carbon steerer tubes require a compression plug and are sold separately)\u003c\/li\u003e\n\u003cli\u003eMK0 IS upper headset includes stem cap, custom hollow bolt, starnut and Enduro stainless steel sealed bearings\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Wolf Tooth","offers":[{"title":"Default Title","offer_id":43412652294211,"sku":"HDUP0078","price":113.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/HD0484_09b24051-7ce3-4872-8a04-8b72f20c065a.jpg?v=1781583939","url":"https:\/\/365cycles.com\/products\/hdup0078","provider":"365 Cycles","version":"1.0","type":"link"}