I ordered these as my first major upgrade to my WJ requiring cutting for the sole purpose of superior underbody protection and they did not disappoint. I only have a 2” spacer lift and front sway bar disconnects with 31” tires. I also have an aftermarket transfer case skid plate along with these rocker replacement sliders and they provided all of the protection I could have needed for where it counts. I installed these literally the day before leaving for a trip, and they were used and abused. They happily took serious hits, scrapes, bangs, and dragging with only slight surface scratches to the initial rattle can paint job. They were extraordinarily helpful as steps to access the roof as well. Very well built and extremely solid pieces of art that blend seamlessly (installer attention required) into the factory body lines. Would recommend to anyone who takes their WJ on actual trails - stock or modified. I would recommend this as one of the first upgrades to anyone who wishes to venture into the outdoors.