The Shimano Ultegra BB72-41B PressFit Bottom Bracket is ...
designed to offer optimal power transfer and smooth rotation at an economical price. Compatible with press fit BB86 frames and 24mm crank spindles such as Shimano Hollowtech II.
cranks spinning buttery smooth with their 4, high-quality sealed cartridge bearings. Also includes anodized spacers, internal bearing spacer (approximately 49mm), and threaded cups. Uses a 36mm wrench for installation.
Profile Spindle Spacers are aluminum spacers designed to ...
move the crank arms away from the frame and aid in chain alignment. Available in two thicknesses and fits 3/4" (19mm) spindles only. Will work with American, Mid, Spanish and European bottom ...