Monobloks Shimano BB-ES300 BSA 73mm OCTA-121MM

Splined bottom bracket for use with Shimano OCTALINK MTB and Trekking cranksets. Sealed cartridge design with oversize ball bearings provides maintenance-free usage and high performance, while rubber seals protects from dirt, mud and water. Type: BSA Shell width: 73 mm Axle length (OPTIONAL): 113 mm OR 118 mm OR 121 mm OR 126 mm Axle Type: Octalink (MTB) Bearings: steel Axle: steel, CR-MO, 22mm Bottom Bracket Cup: plastic (left), steel (right) Weight: ~ 265 g (113mm) Compatibility: FC-T521, FC-T4010, FC-T3010-8, FC-M523, FC-M522, FC-M4000, FC-M3000-8