Stealth Pipes Inc 2 into 1 High Performance Exhaust American made Pipes for American made Bikes. Features: Unapologetically Raw Hand made to get you the most power Quality Back Purged Tig Welded - Pure Art Mandrel bent .065 304 stainless steel tubing Welded on stainless steel collars for easy installation Designed and Dyno tuned for significant horsepower and torque gains Comes with 18mm O2 bung and 12mm bung reducer to fit all applications Drops Pounds in weight from the stock system Made in the USA Note: Heat shields not included.