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RotorUBB 4630 Bottom Bracket


Item # RTR001Z

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  • Black, BBRight ($110.00)
  • Black, BB386 ($110.00)
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Item # RTR001Z

UBB 4630 Bottom Bracket

As much as we'd love to only buy frames with threaded bottom bracket shells, the reality of the market often leaves us opting for press fit shell to get the exact ride we're looking for. When that happens, it's comforting to know that Rotor's UBB Rotor UBB 4630 Bottom Bracket is there to alleviate the creaking that so commonly plagues press fit systems. Its internal sleeve threads together to lock in perfect alignment and provide a precisely solid interface between the cranks and frame.

  • A unique PressFit bottom bracket for 46mm diameter shells
  • Center sleeve threads together for a solid, creak-free interface
  • Smooth, durable steel bearings
  • Silicone seals keep dirt and grime out of the bearings

Tech Specs
Material7075 aluminum
Shell TypePF30, BBright, BB386evo
Axle Type30mm
Recommended Usecycling
Manufacturer Warranty2 years limited

Actual Weight

Black, BBRight
Black, BB386

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead


Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?



Does the bottom bracket come with the rotor UBB+BSA30 tool to install?

Hi Claude, this does not come with the tool. But you can get the tool from Lezyne with the CNC Alloy Bottom Bracket Tool in the 4612 variety (


Dan L.’s question is a good one. What tool will I need to thread this bb together?


What tools do I need to install this BB?


So this would be compatible with BBright frame and a Rotor Flow 30 mm crank, correct?

Hey, Yes it sure would. Make sure to get the BBright option in the drop down. If you have any questions, then please email me at