Honda CRF 450 X starter brush kit can be fitted into the G450X starter.

[Tims1572]

This is some good information:
The Honda CRF 450X (not sure what year Honda CRF 450 X model) starter brush kit can be fitted to the BMWs G450X starter by simply opening up the hole on the crimped wire connector for the larger screws used on the G450X.
Other than that they are a direct fit.
See the pictures attached below to get the part number off of the Honda packaging.