Shimano Hollowtech Bottom Bracket BB-MT501

With better sealing and rotation the SHIMANO DEORE bottom bracket delivers high driving efficiency. 

Structure(Chaincase / E-type): - Shell width(mm): 68 / 73 (BSA) Package Type: Individual package BB Type: Threaded bottom bracket Shell width(mm): 68 / 73 (BSA) Axle Length mm: - HOLLOWTECH II bottom bracket|Press-Fit type: - HOLLOWTECH II bottom bracket|Threaded bottom bracket type: ✔ Spacer|Material: Resin