Trimming and mounting the TJ fender flares took a fair amount of time. We started by trimming the lip off the back of the TJ flares with a box cutter. We then trimmed the front fender flares just above the TJ’s stock turn signal lights so we could trim the front of our slightly dented YJ fenders. We used a cutoff wheel on a Dremel tool to cut the flares and then carefully used a 41⁄2-inch grinder with a flap wheel to clean up the edges. Installation involved clamping the flare in place, marking the mounting holes, and drilling. The TJ flares allow you to trim about 11⁄2-inch of sheetmetal from the rear wheelwells for larger tires or more flex.