Specialized OSBB (73mm) - PressFit MTBInfo Installation Instructions Video Specifications Spacers The BBInfinite OSBB MTB Bottom Bracket works with all 30mm spindle MTB cranksets on the market, such as the stock FACT crankset, RaceFace Next SL, and Rotor REX, just to name a few. Our specialized OSBB bottom brackets ship with the special press tools and retaining compounds you'll need. All you need is the press for this mountain bike bottom bracket. ABOUT OUR BEARING CHOICES: Ceramitech
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