Vance & Hines PCX Stainless 2-Into-1 Upsweep Exhaust For Harley Softail Refined from four decades of on-track competition, the Stainless 2-into-1 Upsweep looks and acts the part. The system is hand TIG-welded of high grade (Astm A269) 304 stainless steel with a brushed works finish and engineered to maximize torque and power output of the Milwaukee-Eight powerplant. The new PCX (Power Chamber Exhaust) version features a chambered high-flow catalyst cartridge designed to increase torque while maintaining 49 state emissions compliance! Features: PCX (Power Chamber Exhaust) technology Chambered high-flow catalyst cartridge designed to increase torque Lightweight high grade 304 stainless steel construction Hand TIG welded 49-state emissions compliant