1. Compatible Model: The front and rear bump stops are compatible with JK 2007-2018, replacing 52060428AB 52060423AB. 2. Quality Material: The bump stop is made of high-quality polyurethane foam, offering greater hardness and durability. It is shorter, softer, crack-resistant, and has a longer lifespan compared to other polymer crash pads. 3. Reliable and Safe: The jounce bumpers feature a diameter of 2.6 inches and a height of 3 inches. Each anti-collision block undergoes strict quality testing before leaving the factory, ensuring safety and reliability for a better driving experience. 4. Easy to Install: The bump stops can directly replace your old anti-collision block. Simply jack up the vehicle, remove the old hard shell bump stop, and press the new one into place. Installation is quick and convenient, saving time and effort.