The 4-inch Lift Kit for 18-19 Jeep Wrangler JL Unlimited is a complete suspension system that is designed specifically for the new Wrangler JL. The basis of the kit are location-specific coil springs with spring rates calculated to deliver a more level stance, while providing additional clearance for larger tires. The kit also includes extended length tubular control arms, shock absorber extension brackets allowing you to reuse the factory shocks reducing overall expense, while new extended length sway bar end links and compression-stop spacers keep the suspension travel safely in check. All installation hardware is included for an easy installation and with the added protection of our 5-Year Limited Warranty, ALLOY USA Lift Kits are your best choice!