Shimano Deore SM-BB52 68-73mm External Bottom Bracket - 24mm - BSA Threaded - 68-73mm YGroup_7033413533741 43mm Replaceable plastic head on

43mm Replaceable plastic head on one side and a 35mm steel strikeing face on the other (for when things need a bit more than a love tap

5 inch - 32psi

Compatible with 68 and 73mm BB shells

GoPro compatible as well as the following Lezyne products:

This kit only works with the following 32 and 34mm dampers:

Shimano Deore SM-BB52 68-73mm External Bottom Bracket - 24mm - BSA Threaded - 68-73mm YGroup_7033413533741 43mm Replaceable plastic head onThe 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