While most of the strength of these sliders comes from the pinch weld... I wasn't happy with the tiny aluminum rivets they supplied to mount the upper section under the doors. I put my sliders to the test and they performed great, BUT there is always some movement on hard impacts; and I ended up shearing every single aluminum rivet.

So I got some heavy duty 3/8-16 rivnuts and installed 3 on each side. When I installed the rivnuts I also used JB-Weld on both sides to help reinforce the sheet metal and to ensure the rivnuts didn't spin out when torqued down.





The middle bolts need to be shortened to ~3/4" because of the pillar. Yes, I used white silicone caulk to make it look more "finished". I added a few washers in between the body and slider since they don't sit perfectly flush and didn't want to pull the rivnuts through the sheetmetal.