Shimano Deore SM-BB52 68-73mm External Bottom Bracket - 24mm - BSA Threaded - 68-73mm YGroup_7033413533741 5 170mm Lyrik/Yari Only) -

5 170mm Lyrik/Yari Only) - RockShox Part: 11

Silca recommends these to be used only for removing a tyre and never for installation

GoPro compatible as well as the following Lezyne products:

Compatible with 68 and 73mm BB shells

Using a stiff material but enough flex so they bend on impact

Shimano Deore SM-BB52 68-73mm External Bottom Bracket - 24mm - BSA Threaded - 68-73mm YGroup_7033413533741 5 170mm Lyrik/Yari Only) -The Shimano Deore SM BB52 Bottom Bracket is one of the go to options for those looking to replace their bottom bracket on a budget. With great sealing and rotation these are excellent value for money by delivering high driving efficiency. Style: BSA 68 73 threaded Spindle size (diameter): 24mm only. Shimano Hollowtech II Compatiblity: Shimano: FC T551, FC T611, FC M552, FC M590, FC M610, FC M612, FC M615, FC M622, FC M625, FC M640, FC M645