1-3/4" header pipes flow in a tapered 3" to 3.5" turnout megaphone 37" L with 3.5" billet end cap Includes performance baffle Dyno developed to produce strong horsepower and torque throughout the entire rev range Unique and stylish to complement the coolest of customs Aggressive sound that will make anyone envious! Proudly made in the U.S.A. Does not include O2 sensor port plugs for non-sensor applications 18mm to 12mm sensor bung adapters not included. Must be purchased separately if required. EXHAUST NB 2:1 97-16FL C