Vance & Hines Big Radius 2 into 2 Exhaust with Power Chamber 18529 Nothing can compete with the style, performance and perfect sound of Big Radius 2-Into-2 PC Incorporates proprietary Power Chamber technology that revolutionizes metric cruiser exhaust design with increased mid-range power and less noise; just the perfect sound Includes removable baffles and mounting hardware Features Super Bung technology; mounting panel positions sensor deeper into exhaust stream, providing enhanced data feedback to the ECM Made in the USA