The worlds only 5-step True Dual performance exhaust system for Softails and Touring models with triple stepped headers from 1 3/4" to 1 7/8" to 2" diameter (44.5mm to 48mm to 51mm) and two-stepped mufflers for anti-reversion, that unleashes maximum torque and optimal horsepower over the full range. Headers feature beefy, full length 2 1/2" (64mm) outer diameter 220 degree, 16 gauge heat shields. Racing True Duals feature removable performance baffles that give that great drag strip rumble and optional Quiet Baffles are available. Headers feature O2 ports with plugs included. These exhaust systems come complete with mounting brackets and are ready to install. Header sets for Touring models that can be used with stock or any aftermarket muffler set for these models are also available.