Great product. Installed on my 15ft JKU with 3.5" lift and 35. I'm towing a 22" RV and the rear of my Jeep flexes a few inches (300lb tongue weight). This kit keeps it perfectly level and eliminates any rear bumps when towing. I recommend it to anyone who drives a jeep. It's the difference between day and night. It took me an hour to install, but I spent most of my time deciding whether to install an air valve. I opted for decided the number plate pocket. It turned out pretty smooth.