Protect the most vulnerable part of your truck or SUV with a set of high quality rock sliders from one of the top brands we offer: RCI Off Road, CBI Off Road, Cali Raised or LFD Off Road. What are rock sliders and why are they important? They are heavy duty steel tubes welded or bolted to the vehicle's chassis, and their function is to protect the door sills and door bottoms from damage when crossing large rocks and other obstacles. They are also great for stepping into your vehicle, or reaching items on your roof. Use the filters above to sort by your vehicle type.