I know Powerflex makes replacement bushes...

https://www.powerflex.co.uk/road-ser...Bush/2146.html

You'd want to do all four if you went down this path.

https://www.powerflex.co.uk/road-ser...Bush/2146.html

There may be other suppliers of the OEM bush too, like Meyle etc.

__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)