Add-ons require the matching base rack in order to complete the rack

quality components like a 1x drivetrain* with a clutch-equipped rear derailleur

5/3/4/5/6mm hex bits

Shimano RT 64 rotors (Center Lock

MATERIAL SHELL: Fiber reinforced polymer

SHIMANO Tiagra RS501 Bottom Bracket - English Threaded 68mm Orange Seal Add-ons require the matching baseThe Shimano BB RS501 bottom bracket features an enhanced seal construction to provide long lasting performance and service life. Designed for a perfect fit with Hollowtech II 24mm crank spindles Anodized aluminum cups are high strength and light weight For use with English thread bottom bracket frames