Delivering the best of both worlds; radical custom-bike styling with high quality details; Big Radius reset the bar for aftermarket exhaust systems. Comes with full coverage 2-1/2″ diameter plasma cut heat shields that preserve the ”new” look and will virtually eliminate visible blueing. Now featuring our innovative PCXT Technology; which integrates chambered high-flow catalysts for a boost in torque while producing the deep throaty growl you want from your V-Twin machine. – PCXT (Power Chamber Exhaust) Technology – Chambered High-Flow Catalyst Cartridge Designed to Increase Torque – Full Coverage Heat Shields – Chrome plated. Vance & Hines innovative PCXT Technology: More Power & Less Heat. The PCXT (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. PCXT 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 rumble; all with no compromise to the styling of any Vance & Hines exhaust system.