BKSM-8134 - Maxhit, 440C Stainless, T47 Internal 29mm/SRAM DUB Bottom Bracket kit TH-873 The eleven-tooth upper and thirteen-tooth

The eleven-tooth upper and thirteen-tooth lower size and profile with 5mm bolt-holes are designed as an upgrade for most 11 and 12 speed Shimano GRX 2X rear derailleurs

A radial bearing generally used as a hub bearing for some quick-release hub designs and can be used as a pivot bearing though the MAX-type version of this bearing is better suited for suspension use

Bearing Bottom Bracket for BB30 Framesets and Shimano 24mm Cranksets

52mm OD and a width of 7mm

Black oxide/magnetite treatment to the races provides an extra level of corrosion resistance and material normalization for extended worry-free performance

BKSM-8134 - Maxhit, 440C Stainless, T47 Internal 29mm/SRAM DUB Bottom Bracket kit TH-873 The eleven-tooth upper and thirteen-toothBKSM 8134 Maxhit, 440C stainless steel, T47 Internal 29mm SRAM DUB Bottom Bracket kit You may find the following tools useful for installation and servicing: For bottom bracket installation: BBT 52x16 29 Pro Cup socket tool for T47 bottom brackets and SRAM DUB cranksets BBT 010 Bottom Bracket Flat Wrench for 44mm x 16 spline and 52mm x 16 spline GR 009 Enduro MAX bearing grease For bearing removal, servicing, and installation: BBT 52x16 29 Pro Cup