Increased power and torque Stainless steel stepped header with power building merge collector S&S engineered high flow catalysts performs as well or better than many catalyst free "Race Only" parts Machined aluminum end cap Deep performance exhaust note Removable dB reducer included (J2825 compliant) All hardware included SAE J2825 Sound Level compliant 50 State EPA and CARB legal: EO# K-010-2