The TeraFlex JK 4” Suspension Lift Kit delivers the ability to conquer the most extreme trails and conditions. Drivability and performance are the most important factors that are engineered and built into every TeraFlex lift kit. Properly developed suspension geometry, roll center, and load tuning ensure that all factory stability controls remain functional and within the parameters that Jeep originally engineered into the vehicle. TeraFlex kits drive straight and will crawl anything, getting you there and back! This system includes 4” lift coil springs, front adjustable track bar, front sway bar disconnects, rear sway bar links, rear track bar bracket, bump stops and all necessary hardware. This kit allows up to a 37” tire; aftermarket wheels with 4.5” backspacing or less are required. Fits all JK Wrangler models including Rubicon and Unlimited. Note: This kit does not include shocks; longer shocks will be required. This kit must be used with adjustable control arms to establish correct caster and pinion angle during re-alignment. 2012+ JKs require exhaust spacers (#2610000) or other exhaust modification for proper driveline clearance. Driveline modifications are highly recommended with this lift kit.