For Infiniti G35 Coupe Dual 4.5" Rolled Tip Hi-Power Catback Exhaust System+Intake Pipe+Red Filter Made of High Quality T-304 Stainless Steel and T-6061 Aluminum TIG Welded CNC Machine Flange for Resistance Against Pressure and Corrosion Aggressive Deep and Smooth Tone Sound / Improves Filtration Efficiency Up to 95% Intake System - 3" Inlet Size / 3" Air Filter is Washable with Water or Soap, and Reusable Catback - Dual 4.5" Diameter Muffler Rolled Tip / 2.25" Inlet