This tip kit contains 2) tip assemblies with a total of 4) outlets. These single 3" Inside Diameter (I.D.) Inlet with dual 4" round Outside Diameter (O.D.) Outlets black chrome on T-304 stainless steel outlets tips are the perfect way to customize the appearance of your Grand Cherokee Trackhawk. They are designed to fit BORLA® Cat-Back™ systems 140755 and 140756 ONLY. They will NOT fit on the Original Equipment (O.E.) exhaust system and will NOT fit vehicles equipped with O.E. trailer hitch. Using BORLA® Stainless Steel Polish p# 21499 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. They are designed to be clamped on (clamps not included, use clamps included in BORLA® system). To install tips, insert inlet ends of BORLA® tip assemblies into outlets of rear muffler assemblies. When using these tips the tailpipe adapters (620359) included in the Cat-Back™ system are NOT used. Tip dimensions 3" I.D. Inlet, Dual 4" Outlets, 15.5" Overall Length. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit. BORLA® tips are available in a wide range of materials, finishes, sizes, and styles. They are the perfect way to give your vehicle a custom appearance. Best of all, BORLA® exhaust tips are covered under our Million-Mile warranty with the following exceptions. BORLA® will warranty black coatings, tip finishes, and carbon fiber parts for one year.