Right side 142x12/148x12mm geared insert (only right side, derailleur hanger!)
This dropout insert has threads that are M12x1.5 and will work with either your 142mm spaced frame or a boost 148 spaced frame
Right side 142x12/148x12mm geared insert (only right side, derailleur hanger!)
This dropout insert has threads that are M12x1.5 and will work with either your 142mm spaced frame or a boost 148 spaced frame