Bottom Brackets

Shimano BB-ES300 Octalink V2 Bottom Brackets - Fits Shimano Octalink V2 Spline Cranksets - Crankarm fixing bolts not included

Shimano's Tiagra Bottom Bracket Cups are perfect for Shimano's Tiagra Crankset (sold separately). They feature light, durable aluminum cups with super-smooth sealed bearings and a center plastic sleeve for even more protection from water and dirt. The Tiagra Bottom Bracket is available in English and Italian threading.

Cartridge-style bottom bracket for use with E-Type front derailleurs. - Smooth rotation - Square taper spindle - Sealed cartridge bearing assembly

BB-UN26 cartridge bottom bracket. - Smooth rotation - Square taper spindle - Sealed cartridge bearing assembly