I purchased these for my 2015 JKU. They fit great and are well designed. I ended up just bolting them up with the bottom bolt and top bolt on the passenger side to hold them on tight and welded them to the frame. Since the drivers side doesn't have the gas tank behind the frame I bolted them up with just the two bolts on the bottom for the front two mounts and put a bottle jack under the rear mount. I used C clamps to pull it tight to the frame and threw a weld on both sides of the mount.. They are bombproof and never coming off.