Left Stopper Part No.: 50842-SR3-N10
Right Stopper Part No.: 50841-SR3-N10
The original design is quite flimsy, especially the left mount. The thin rubber would be able to hold against hard driving.
To strengthen it, I stuff some fuel hoses into the gaps to reduce the flex of the mount.
Next I filled up the gap with some polyurethane. I went for the marine grade, hoping that it can withstand the weather better.
I tape up one side of it before pumping the polyurethane in to prevent it from flowing out the other end.
Once done, leave it alone for a couple of days for it to be fully set.
The reason I am not filling it fully and using hoses, is because I dont want to it to be too stiff. If the mount is still soft, I can alway fill up the hoses with polyurethane to increase the stiffness :)
I had a pair of this, but it was way too stiff for daily usage...