{"product_id":"wolf-tooth-mk0-bottom-bracket-english-bsa-68-73mm-shadow-gray","title":"Wolf Tooth MK0 Bottom Bracket - English BSA 68\/73mm Shadow Gray","description":"Wolf Tooth MARKZERO (MK0) Bottom Brackets deliver high performance through aggressive machining, custom ceramic bearings, and intricately designed race sealing built to exacting specifications. These components save watts while proving durable enough for intense off-road racing and inclement conditions, and are fully serviceable. MK0 components are proudly machined at Wolf Tooth HQ in Minnesota, USA.\n\nThe MK0 features silicon nitride ceramic bearings with custom race sealing for flawless performance against the elements and enhanced speed. Custom polymer spindle bushings separate the bearing inner race and crank spindle to eliminate metal-on-metal contact, which is the leading cause of bottom bracket creaks.\n\nThe bushings also enhance bearing longevity by providing an interface to the bearing gutter seal for maximum weatherproofing. The bottom bracket is aggressively machined to be lighter than the competition while offering superior speed and performance in all conditions.\n\nConstruction includes 6061-T6 aluminum cups and AISI 52100 chrome bearing steel races hardened to Rc 60-65 with ACOSUR-ZNA corrosion resistant coating.\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom Bracket Shell I.D.\u003c\/td\u003e\n\u003ctd\u003e1.37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBB\/Frame Interface\u003c\/td\u003e\n\u003ctd\u003eEnglish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBB Shell Width (mm)\u003c\/td\u003e\n\u003ctd\u003e73\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e76, 77, 82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle Interface Type\u003c\/td\u003e\n\u003ctd\u003eRaceFace Cinch 30mm, Shimano Hollowtech II, SRAM DUB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefined Color\u003c\/td\u003e\n\u003ctd\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Wolf Tooth","offers":[{"title":"Raceface Cinch 30Mm","offer_id":46730283876549,"sku":"CR2590","price":309.95,"currency_code":"USD","in_stock":false},{"title":"Shimano Hollowtech II","offer_id":46730283909317,"sku":"CR2588","price":309.95,"currency_code":"USD","in_stock":false},{"title":"SRAM DUB","offer_id":46730283942085,"sku":"CR2589","price":309.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/9194\/7461\/files\/d4245e408dfa50ff973fc524c9589a6dfe58fe00.jpg?v=1786776060","url":"https:\/\/trekbikesflorida.com\/products\/wolf-tooth-mk0-bottom-bracket-english-bsa-68-73mm-shadow-gray","provider":"Trek Bicycle Stores of Florida","version":"1.0","type":"link"}