2-into-1 equal-length headers 1-3/4" headpipes 2 Headpipe heat shields Utilizes an advanced inner collector for maximum performance Mild steel Construction with Mig Welding Made in the U.S.A. Includes 18 mm O2 sensor ports and 12 mm adapters Fits models with mid controls only, no forward control models. EXHAUST RR 04-19 XL CH