The BB-RS501 from Shimano is a high-quality bottom bracket for frames to BSA standard with 68 mm housing width. Usable is the Shimano BB-RS501I with BSA thread for Hollowtech II cranksets with 24 mm shaft.

• Use: Road, Cyclocross, City, Gravel
• Group: TIAGRA
• BB-Type: HollowTech II
• Thread type: BSA
• Shell width: 68 mm
• Material: aluminium / Gumos mišinys
• Weight: 93 g