I installed them on my 2014 Challenger Blacktop 6 Speed and got amazing results. If the temp is below 40 and you apply the brakes you're hitting the wheel at less than 10 mph. My factory brakes had done 50,000 and needed replacing (oddly, those on my 2010 Charger RT were still good with 75,000 miles!) , maybe an upgrade. I'm really impressed with these brakes, I've had to put a lot of pressure on them more than once and I couldn't believe their grip. The perforations and slots also look great on gloss black RT rims!