Outside Diameter (OD) = 2.5" Content: 4 Pipes, 1 X-Pipe and 8 Exhaust Clamps Universal, Non-Vehicle Specific Exhaust X-Pipe Kit DIY, May Require Bending/Welding Depending On Your Needs Improve Sound, Horsepower & Torque Will Come Exactly As Pictured Top Quality SS409 Stainless & Affordable Products Installation Tips: Depending which end of the inlet/outlet pipes you insert, max length or max width will change max. The two max dimensions are: Configured For Max Length: 42" length with a 14" width (center line) Configured For Max Width: 39" length x 24" Width (center line) Please Note: Universal fitment DOES NOT mean it will fit on all vehicles! This item will only fit on vehicle model that require an exhaust pipe matching the inlet/outlet/length dimensions exactly as listed above. It is the customer's responsibility to verify and make sure this exhaust pipe will meet the exact dimensions required.