Wheels Manufacturing BB30 to Shimano Bottom Bracket with ABEC-3 Bearings Black Cups

Two machined aluminum cups thread together keeping the bottom bracket stable in the frame, increasing bearing life, and simplifying maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement. Specifically designed for installing 24.00mm spindle diameter cranks (Shimano, Etc.) in BB30 (42mm ID BB shell) frames without the need for any adapters. Bearings: Enduro ABEC-3 Color: Black Bottom Bracket/Frame Interface: BB30, Specialized Alloy OSBB Bottom Bracket Shell Width: 68mm - 73mm Bottom Bracket Shell I.D.: 42mm Over Bearing Width: 90.5mm in 68mm wide shell* Crank Spindle Diameter: 24.00mm Tool Pattern: 44mm, 16-notch Weight: 130g