ROTOR UBB 4630mm Threaded Bottom Bracket - Steel

You, or more specifically, your choice of frame, motivated Rotor to address challenges related to bottom bracket installation and durability. They embraced the task to improve upon so-called bottom bracket standards to give you the UBB4630. Crafted from 7000 series aluminum alloy, the UBB4630 uses a threaded sleeve to lock both cups in place - without having all the locking effort rely on the press fit shell, thus providing a uniform spin and avoiding undesired noises. The flush fitting in the press fit region prevents bearing overload and also improves bearing alignment for a longer bearing life. The external bearing location affords a smoother spin and increased BB shell stiffness for PF30 and BBright standards. The internal sleeve also prevents cable guides from rubbing against rotating parts. 

Characteristics: 109 gr

Compatibility: BBright shells  / BB386 / Pressfit 30

Material: CNC

Crank Axle Compatibility: Standard

Discipline: Cyclocross, MTB, Road