Vance & Hines PCX Power Duals Headers For Harley Touring With the PCX Power Duals, Vance & Hines brings their proprietary PCX (Power Chamber Exhaust) technology to the line, while also noting customer feedback and repositioning the catalysts further back to aid in rider comfort. You know you can count on Vance & Hines to perform, after all, they did write the book on performance and quality after decades of race experience. Whether it be that extra off the line pull as it transitions to better mid-range torque, or the thundering howl that chases you, you're sure to love these pipes. Features PCX (Power Chamber Exhaust) technology Chambered high-flow catalyst cartridge designed to increase torque Catalysts repositioned downstream for rider comfort Stepped headers Full coverage heat shields Header pipes only, mufflers not included 49 state emissions compliant Notes: Must be used with Touring 2017-Up dual diameter OEM style muffler 2017-Up Harley CVO Screamin Eagle models require the use of a Floorboard Spacer Kit (sold separately) 2009-Up Trike models will require the use of an Adapter Kit (sold separately) The selected finish/color refers to the full-coverage heat shields. The underlying header pipe finish/color may vary. Once installed, the selected color will be the primary visible finish.