The 3.5-4in Suspension System for the Wrangler JL 4 Door offers the best of both worlds from street driving to off road driving. The system includes Skyjacker’s Dual Rate Long Travel coil springs that are specifically designed for the Wrangler JL to ensure superb highway driving, as well as exceptional off road capabilities! The Dual Rate Coil will expand during articulation when off road as the suspension drops to keep the tires in contact with the road longer than a single rate coil. The results of this are a much smoother and consistent ride. The system features extended sway bar end links that allow for full droop. The included bump stop extensions will make sure the suspension clears the tires at bump. The included M95 Monotube full travel shocks are length fitted and will allow the maximum extension for full articulation. This system fits Wrangler JL 4 Door vehicles Sport/Sahara, and Rubicon Packages.