This new bolt-on XDR performance exhaust system is designed specifically for the 2015-2019 Polaris RZR 900 2 and 4 seat versions with naturally aspirated engine, including 900S models. Features full 409S stainless steel construction with a 2.25 inch mandrel bent inlet tube flowing into the XDR performance cross-flow muffler and includes a bolt-on stainless steel heatshield. The dual 2.25 inch mandrel bent tailpipes are tucked up high within the rear fenders providing a moderate to aggressive deep sound level and contain USFS qualified spark arrestors allowing you to meet stock class race rules when necessary. The system is finished off with a pair of 3.50 inch brushed 304s stainless steel tips with black anodized CNC machined aluminum end caps exiting above the factory rear valance. Includes all necessary hardware and installation instructions for a simple at home installation. Note: This system is intended for competition use only and not intended for trail or on-road use and is Not EPA emissions compliant. Not available for sale or use in California.