1-3/4" header pipes flow in a tapered 3" to 3-1/2" turnout megaphone. 37" L with 3-1/2" billet end cap. Includes performance baffle. Made in the U.S.A. 18 mm to 12 mm sensor bung adapters not included. Must be purchased separately if required. Does not include O2 sensor port plugs for non-sensor applications.
