Transform the style; sound and performance of your Big Twin with this Vance & Hines Big Shots Staggered exhaust system. Sleek one-piece heat shields will give your bike the classic long and low look of true duals; and with the Power Chamber hidden crossover; the performance characteristics boost of a 2-1. Big Shots Staggered now also feature our innovative PCX™ Technology; which integrates chambered high-flow catalysts for a tuned growl and greater boost in torque as you accelerate through the gears. Note: FLI Hydra Glide Revival; FLSB Sport Glide; FLHC/S Heritage Classic and FXLRST Low Rider ST require 565720 saddlebag support kit; right side only; when using OEM saddlebags. - PCX™ (Power Chamber Exhaust) technology - Chambered high-flow catalyst cartridge designed to Increase torque - Full coverage heat shields - Power chamber hidden crossover - CNC machined billet end caps. Vance & Hines innovative PCX™ Technology: More Power & Less Heat. The PCX™ (Power Chamber Exhaust) Technology are factually chambered high-flow catalysts. Used to increase mid-range torque for more responsive acceleration off the line. They are positioned downstream for up to 20% less heat at the floorboards / footpegs and 50% less heat at the collector; to optimize rider comfort over the stock system. PCX™ technology uses a high-flow double-matrix catalyst that improves torque delivery through the mid-range for more responsive acceleration. All while producing an even deeper full-throated rum