Mine was partly knocked off twice. Two areas to look for damage. First is the strip itself. It may get scraped a bit, but as long as all the tabs are present, it can be reused. The tabs of the strip go into slots in the splitter, also a soft plastic. If the slots are OK, you may just need new expanding screws and you are good to go. I think the strip is $180 and the splitter is $349 and may need painting depending on your model.
That is why I paid to have a 911 lift kit adapted to my Cayman.