Machined aluminum shell threads together for precise bearing alignment and frame fit, reducing bottom bracket creaking and premature bearing wear. Replaceable Enduro bearings. Made in the USA. ABEC-5 Angular Contact sealed bearings. Angular contact ball bearings are particularly suitable for carrying combined axial and radial loads. Fits bottom bracket shell widths from 86mm to 92mm and cranksets with 24/22mm diameter spindles like , Truvativ GXP, etc. Item Specifications: Weight: 100, BB/Frame Interface: BB86, BB/Frame Interface: BB89.5, BB/Frame Interface: BB92, Spindle Interface Type: /Truvativ GXP, BB Shell Width: 86, BB Shell Width: 89.5, BB Shell Width: 92, Defined Color: Black, Bottom Bracket Shell I.D.: 41,