Love the threaded BB30 solution from Rotor Bike Components? That same threaded pressfit design is now making its way to more bottom bracket “standards” thanks to their new UBB4630. For whatever reason some bottom brackets tend to creak – some claim it’s the fault of frame manufactures, while others claim it’s a fault of the BB design itself. To help with the issue, Rotor is adding a more secure aluminum threaded pressfit bottom bracket to complement their current UBB line.
Whether you have a frame with a PF30, BBRight, or BB386 shell, the UBB4630 is here to help…
At the core, the UBB is a threaded aluminum shell with two matching threaded cups. The threaded mechanism takes some of the locking function off the press fit shell which is said to allow for a more precise installation and a more secure fit resulting in better spin and less noise. According to David Martinez, Rotor’s head of engineering, “The motive for the UBB4630 was to address challenges related to bottom bracket installation and durability with respect to specific frames.” He goes on to say that the UBB4630 will reinforce their current UBB line.
Sold in PF30, BB386, and BBRight fitments, the UBB has a claimed weight of 109g and will be available with either steel or ceramic bearings ( 89.99€ and 199.99€ ).