2008-2013 Challenger RT 5.7L V8 2.5" Cat-back Exhaust w/ Violator Mufflers For use on 2008-2014 Challenger R/T 5.7L V8; Does not fit SRT-8 Includes: X-Pipe, tail pipes, band clamps, hangers, insulators, double-boxed tips & Violator mufflers Violator adds the famous chambered sound at idle and cruising but doesn't get obnoxious at full throttle Made by Pypes Performance Exhaust and backed by their lifetime warranty Includes installation instructions & technical assistance services