Parts & Accessories Spare parts I am offering a Sierra back box from Fox. The kit fits Tahoe, Yukon, Sierra, Silverado from 2007 to 2018. The kit has a calm and enjoyable sound. The kit is electronic with all its accessories. It has never been used for "tajmeer" (a term often used for modifying exhaust for loud sound) and is free from leaks. Whoever wants to hear its sound can message me privately. The highest offer is 1600. Offers below this amount will not be considered. Please do not lowball. Please do not lowball. Please do not lowball. I will not disappoint the serious buyer.