Someone told me they had to snip them for oem, so I just went ahead and snipped. It’s just attached by sticky foam, so it’s also possible to just rip them off, but I think they are only necessary for the plastic strips, not for oem rails.Let us know if you find out, I'm hoping to buy some in the near future.
OEM doesn't use those, at least the North American models. Mine doesn't even have them at all when I went to replace my silver rails with black ones....I think they are only necessary for the plastic strips, not for oem rails.