This is my custom made endstop mount for Prusa i3. It is designed to be installed on the Y-axis platform as compact as possible. I get maximum movement of my bed at 180 mm with this. This design consist of 2 parts, it then installed together with 2x M4 bolts and nuts (see picture). As long as you are using the original design of Prusa i3 Y-carriage and the bearing mount you should be able to use this :)