Yesterday installed the rear support bar from Schnell on my 2015 Boxster S. Followed the instructions, and the whole project took under an hour. Easy installation. (Anyone else could have done it in half the time, but I am slow and meticulous) Today took the car out on some "twisty" roads. Car does feel more solid around the curves. Did not drive at 10/10ths though, as still under 2000 miles. Overall pleased with the results. Schnell even called to ask how I liked it......very first class of them!