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

50 State legal, EPA and CARB compliant: EO# K-010-15 Improved power and torque for greater rideability Bold 4.5" billet endcaps with Highlight Machined Thruster design O2 sensor location same as stock Includes adapters that allow use of wide band or stock O2 sensors High Flow Cats increase exhaust flow for optimum torque Produces a deep bass rumble throughout the RPM range Relocation of cats to mufflers reduces rider heat Meets SAE J2825 sound standard Made in the USA