HORN chain guard installation

Detailed installation instructions with a selection table can be seen on the original packaging of the spare parts.

Chain guard installation with new mounting bracket

Mounting bracket is installed with the bottom bracket bearing 
e.g. B160, B190, B0438, B28, B29, B0244, B0248, B0548, B220

Mounting bracket (retrofit bracket) is clamped on the bottom bracket bearing housing 
e.g. TR 28, TR 29, TR 38, TR 220