Borla Bullet cat-back and Y-pipe made of stainless steel, with a delightful sound that you will enjoy. For your information, the cat-back has been modified in terms of sound intensity and does not have a back pressure valve, meaning no air will disrupt the cat-back system. Its sound is not like the standard Borla cat-back. The silencing system has been removed, making the sound stronger, smoother, and better than before. I have also shortened the length of the cat-back, as shown in the picture, so that it is hidden. Fits Yukon, Tahoe, Suburban, or Denali 2007-2014.