MAHLE SmartBike Systems X20 Freewheel Set - Shimano Microspline Aluminum MFPN=100727-AU00-04 Color Black Ring Position/Type Chain

Color Black Ring Position/Type Chain Retaining Single Ring Tooth Count 38 Round or Oval Round Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Chainring BCD 104 Material Aluminum Defined Color Black keyword search SRAM T-Type keyword search SRAM Transmission

47 BB/Frame Interface T47 BB Shell Width (mm) 86 BB Shell Width (mm) 92 Spindle Interface Type SRAM/Truvativ GXP Defined Color Black

And of course

B17 is Brooks flagship model and has been on the market for over 100 years 1st appearing the 1898 catalog

MAHLE SmartBike Systems X20 Freewheel Set - Shimano Microspline Aluminum MFPN=100727-AU00-04 Color Black Ring Position/Type ChainMAHLE SmartBike Systems X20 Freewheel Set Shimano Microspline Aluminum. Replacement freehub bodies for Mahle X20 ebike motors. Mounting nuts included