The TeraFlex 2.5″ Rear Spring Spacer is designed to work in stock configuration or with a lifted Jeep Wrangler JK and is the perfect solution to level out a loaded vehicle. The TeraFlex exclusive spring retainer and guide is incorporated in the rear spring spacer, helping to realign the spring to its proper location during extreme articulation. You don’t have to worry about the spring falling out with this product! Kit Includes:- One (1) rear spring spacer- Installation instructions Sold individually No drilling, cutting or welding required Makes room for larger wheels/tires Easy install Fits:Jeep Wrangler JK 2 Door (2007-2018)Jeep Wrangler JK 4 Door Unlimited (2007-2018)