Jeep moved the exhaust forward on the 2012 Wrangler. Unfortunately on Jeeps with 2.5 or more of lift that means their front driveshaft is liable to make contact with the exhaust Y-Pipe melting the CV boot and causing the driveshaft to fail prematurely. The Rugged Ridge Exhaust Spacer Kit for 3.6L Wrangler helps move the Y-pipe further back and increases the amount of front suspension travel from 2.5 to over 5.5 thus saving your driveshaft. The spacers install on the flanges between the front headers and Y-pipe.. The great thing is the kit is easy to install and does not require permanent modification to the exhaust. Hardware included. Backed by Rugged Ridge s exclusive three-year limited warranty.