The E92 BMW 335I came in a dual tip and a quad tip exhaust option. The Mevius BMW 335I Exhaust System with Dual Tips is for the former and is designed to make your stock 335I into the Ultimate Sounding Machine! The tone is more aggressive, yet it is not as loud as other systems. The Mevius Exhaust System not only uses SUS304 stainless steel in the piping and the double wall dual tips, we use stainless steel in the OEM style flanges and hangers as well. Those hangers are also hollow and located in the same positions as the factory exhaust for easy installation. The warranty is just as painless as the installation and you're covered for 3 years on factory defects.