The part you are referring to Andrew is the wishbone bush M150002. They fit to upper and lower inboard parts of wishbones so four used each side. I believe aftermarket more durable polyurethane bushes are available.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone