Inlet 3" to Outlet 3.86"Glossy Black Carbon Fiber Exhaust Tip Black 4pcsUniversal fit for vehicles with dual exhaust outlets and tailpipe outer diameter (OD) 3". Common on many performance cars, muscle cars, and light full size trucks with dual or aftermarket exhaust systems. Measurement Requirement: Measure your vehicles tailpipe Outer Diameter (OD) (Use a caliper for the most accurate measurement.) Ideal OD: ~7475mm (2. 92. 95") perfect fit for the 76mm (3") inlet using the included clamp Smaller OD (e. g. 63mm 2. 5")