S&S Cycle Superstreet 2-into-1 Exhaust Systems 550-0789BClassic 2 into 1 styling Headers and muffler are fully heat shielded for a blue proof design Stainless steel header construction S&S engineered high flow catalysts (49 state systems) Oxygen sensor ports allow the use of wide band or stock O2 sensors Models with mid controls require brake pedal kit PART #1861 1354 (sold separately) Removable dB reducer (included) meets SAE J2825 sound standard Made in the U. S. A.