Here's a helpful tips I'd like to share.

Pictured below are C-Clips included in the kit part #CTW-28. They are used to mount #A2174C to the lower suspension arms. Please note the C-Clip on the right has a flatter surface than the left which is more rounded. I recommend to mount the flat surface towards the carbon suspension arm for a better and secure fit pictured below. Flip the C-Clip to find the flat surface.

If you choose to use the optional O-Ring instead #0R4 it's imperative to make sure it securely sits inside the groove of #A2174C.