S&S CYCLE El Dorado Dual Exhaust System - Black - Black Thruster 550-0679B

El Dorado Dual Exhaust System - Black - Black Thruster Improved power and torque, Oxygen sensor location same as stock, Includes adapters for use of wide band or stock oxygen sensors, Use two high-flow cats to increase exhaust flow while providing just the right amount of back pressure for optimum torque, Relocation of cats to 4-1/2" mufflers reduces heat on rider, Produces a deep bass rumble exhaust note throughout the RPM range, 4-1/2" billet end caps, J2825 sound compliant, Made in the U.S.A., Not for CVO models., Not for Trike applications.