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Rotor UBB4630 Bottom Bracket

$99.00ea
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The Rotor UBB4630 Bottom Bracket is designed for universal compatibility with 46mm diameter bottom bracket shells. 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.

PF30

Bottom Bracket STD: PF30 

A guide to bottom bracket standards.

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