The TeraFlex 3″ Base Lift Kit is designed to give you everything that you need to take your Jeep Wrangler JK 4 Door on the most serious trails. This kit helps improve drivability and performance, as well as suspension geometry, roll center and load tuning, ensuring that all factory stability controls remain functional and within the parameters that Jeep originally engineered into the vehicle. This kit will allow you to run up to a 35″ tire or aftermarket wheels with 4.5″ backspacing or less. Kit Includes:- 3″ lift coil springs- Front sway bar disconnects- Rear sway bar links- Rear trackbar bracket- Bumpstops- Necessary hardware- Installation instructions Improves drivability and performance, on road and offroad Maintains factory stability controls Allows for 35″ tires Estimated installation time: 4-8 hours Installation Instructions:https://teraflex.com/file/attachments/54821fcb0b585633b300706c.pdf Notes:** Driveshaft modifications are recommended with this suspension system*** 2012+ JK’s require exhaust spacers or other exhaust modification for proper driveshaft clearance. Fits:Jeep Wrangler JK 4 Door Unlimited (2007-2018)