So, I finally got around to posting this. I removed my Touratech Knockoffs to install the BMW plastic guards. I did this because the BMW ones appear to give better protection against smaller projectiles. Here is the TT knockoff guard. To remove the shroud, take out these three screws, T25 Torx, and pull down on the shroud to remove from the upper tab slots: The 2017 guards need a bit of trimming to fit, and the radiator shroud does as well. I found that trimming off all the tabs on both ends of the guard worked easiest. Here is why: Additionally, some material needed trimmed from the sides for the shroud tabs: Then a little of the shroud itself needed to be trimmed to fit. This was the only part of the shroud that needed trimming. Once all is trimmed, you can see how the new guard fits up to the radiator snugly, and wont move. The curves make it stay in place. The original screws go back in and it is done. The new guards do not move at all, and stand away from the radiators a little more than 1/8". So, not plug and play, but it took about 45 minutes, photos and all.