Check the listing for details. ROTOR UBB 4630 Bottom Bracket for BBRight. Color: Black, Condition: New. Listed at 115.00 USD. ROTOR UBB 4630 Bottom Bracket for BBRightThe ROTOR UBB 4630 Bottom Bracket adapts any BBRight bottom bracket shell to fit a 30 mm diameter crank spindle. However, what is unique about ROTOR’s UBB, is that it features external bearings and uses a threaded sleeve to lock the bottom bracket cups in place. This offers several advantages over a more traditional press fit bottom bracket. The ROTOR UBB helps provide a uniform, smooth spin to the crankset, it helps eliminate any unwanted noises and creaks; it works to improve bearing life; and the external location of the bearing results in increased shell stiffness. CompatibilityWorks with BBRight bottom brackets. SpecsShell Width: 68/79/83/86.5 mmType: BBright ThreadedAxle Size: 30 mmBuilt using 7000 series aluminum alloy Why Buy from Power Meter City1. We ship fast! All orders ship on the same day your order is placed!2. Free shipping on all orders in the U.S.3. We are an authorized ROTOR dealer and this product comes with a full warranty.4. Expert advice and customer service in case you need any help.5. We offer a free, 30-day return policy on new items. About our CompanyAt Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service. We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.