Electronic sound muffler with a set of clean nickel exhaust outlets. Suitable for GMC Sierra model 2011 (and fits models 2007 to 2013). Used and very clean, the valve is working and excellent, and the nickel shine is clean. Note: Selling the muffler and nickel outlets only without the remote. (You can buy a replacement remote from decoration shops for about 50 riyals and program it, or install an internal switch at an electrician for 30 riyals, which is the easiest and most reliable solution).