UBB PF30 (4630) Threaded Bottom Brackets

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  • MSRP $219.00

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. 

Steel 109g

  • BBright Model - only if crank does not have an integrated spacer on the spider
  •  BB386 - all PFBB386EVO bikes
  • PressFit30 - only for ROTOR extended axle cranks (all 30mm) on PF30 frames
  • Requires special installation tools



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