Thank you Carbonazza! I ordered the 165x40 trunnion version as wing said the 42.5 wont fit . I will order this bushing kit now
Wing is playing conservative, as the frame was designed for a 40.
Many of us here are with a 42.5, you can contact bike24 and change it if you like.
The shock comes with a bushing you'll have to remove(the metallic part in the picture)
The black tool is from WFMG, 1/2" bushings, it helps to remove it cleanly.
I did it already with a screw of the right diameter on a piece of wood, but it was more brutal.
As a last resort, an LBS should be able to help you get it out.