RG7 17/14x10 red brass plain bearing bushing for optimum piston sliding behaviour. Please note that you need two per piston (enter the desired quantity in the shopping basket).
The E plain bearing bushing is made of harder material, which is why it lasts longer. Depending on use, it should be re-greased approximately 1-2 times per year:
Remove the plain bushings from the side (the black end caps will come out with them).
Wipe the plain bushings and piston pins dry with a cloth.
Apply a little new grease (we recommend transparent silicone grease) to the pins and put everything back together again.