Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4646519.

I have printed and run several of the upper link mounts that are floating around and have broken every single one. They rely too much on layer adhesion for strength. So I designed this one to literally hook the gear box and use a single screw with a recessed nut to secure it. Print at 215C with 100% infill for maximum strength. I added a 3mm hole in the bottom of the mount to secure a rod style rear lock out or you can print the one pictured from my other files.