Installation required some modifications. On my Corolla 2021 I had to drill 2 holes for the rear mount. There are pre-drilled holes in the valves, but Toyota doesn't have any pins or holes in these locations. I used a small Phillips screwdriver which I heated with a lighter and inserted slightly into the plastic inner fender. I used the screws from the kit and put a little gorilla dab on them before screwing them into the holes to make sure they wouldn't loosen over time. Once fitted they fit and look great.