PRGcycle stainless steel external bottom bracket, lighweight CNC machined alloy cups with replaceable bearings. Stainless steel bearings offer a high standard of performance, Compatibility options include Shimano Hollowtech II.
●Shell dimension: 34.8mm (1.37")
●Shell length: 68 / 73mm
●Spindle dimension: 24mm
●Bearing: Steel bearing
●Compatible system: Shimano HTⅡ MTB
●Package: 1 SET / PRG box