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 BORLAÂ Cat-Backâ„¢ 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 BORLAÂ Stainless Steel Polish p# 21461 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 BORLAÂ system). To install tips insert inlet ends of BORLAÂ tip assemblies into outlets of rear muffler assemblies. When using these tips the tailpipe adapters (620359) included in the Cat-Backâ„¢ 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. BORLAÂ 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 BORLAÂ exhaust tips are covered under our Million-Mile warranty with the following exceptions. BORLAÂ will warranty black coatings tip finishes and carbon fiber parts for one year.