Vance & Hines PCX 3 Round Twin Slash Slip On Mufflers With the Twin Slash 3-inch slip-ons, you will get the benefit of increased performance and the bellowing, throaty growl of a Vance & Hines exhaust. In addition to the performance and sound, V&H fashioned a stylish look that's blue proof thanks to full-coverage heat shields over the muffler bodies. Features: PCX (Power Chamber Exhaust) technology Chambered high-flow catalyst cartridge designed to increase torque Full coverage heat shields 49-state emissions compliant Sold as a pair Note: Photos are shown with OEM accessory head pipe heat shields for reference only - shields for the head pipes are not included with the mufflers.