The Shimano Tiagra BB-RS500 68mm English Bottom Bracket offers long lasting HollowTech II performance and a new seal construction. Easy to install, for use with 2-piece (cap free) road chain sets.
68mm BSA (English Threading) HollowTech II Long Lasting Performance New Seal Construction
Model Number: BB-RS500 Series: Tiagra BB-Type: HOLLOWTECH II Material: Aluminum BB Shell Width: 68mm Threaded: BSA (BC 1.37 English) Approx. Weight: 71g