The Riot is where aggressive design and 2 into 1 performance collide in the ultimate upgrade system with attitude. The Riot 2 into 1 performance exhaust system will turn heads with its one of a kind custom look and deep roaring, power packed sound quality. The MagnaFlow signature Hi-Flow louver core puts the power to ground with increased performance over stock. Riot Exhaust Features: • Increased performance over stock • Powerful 1-3/4” to 2” to 2-1/4” stepped stainless steel head pipes • 12mm and 18mm O2 sensor ports • 2-1/2” heat shields and laser cut junction cover • Innovative 4-1/2” tapered end cap with precision channeled profile and competition body style The Riot 2 into 1 is the ideal choice for tuned engines that demand max flow and output or stock engines looking for that added punch. Give your Sportster the best head pipe, muffler and heat shield system with MagnaFlow's unmatched Riot exhaust. With a black finish and black end caps, you'll not only have the best sounding system, but the best looking performance exhaust on the road. Custom fit to your bike, MagnaFlow's head pipe, muffler and heat shield systems for all Sportster® models years 2004-2017 are a guaranteed improvement to your stock exhaust system.