The Arlen Ness by MagnaFlow Lowdown full system features 1-3/4” stainless steel head pipes and a custom look with a dynamic stance on the bike. The innovative Twin Clamp offers functionality to stabilize the system while giving a one of a kind, custom defined look. Lowdown Full System Features: • 2-1/4” heat shields offer full coverage protection • Hi-Flow maintenance free louver cores supply increase power you can feel over stock • An unmatched rich, powerful sound quality The Lowdown performance exhaust system comes equipped with 12mm and 18mm O2 sensor ports for maximum tuning options. Give your Softail motorcycle the best full system with head pipes, mufflers and heat shields with MagnaFlow's unmatched Ness-Comp exhaust. With a black finish and gloss 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 full system with head pipes, mufflers and heat shieldss for all models except Rocker and Breakout years 1986-2017 are a guaranteed improvement to your stock exhaust system.