The genuine skirts connect onto the end of the flared sport arches - so i'm pretty sure you will need the sport arches, and liners if you want to fit the genuine skirts. If you get the sport arches and skirts - you CAN fit them onto the normal bumper but it requires a lot of sanding, filling, bending and painting. You can pick up a sport kit in the for sale section fairly easily if you're a CS Member![]()