Bomiz Full Titanium Valved Exhaust E9x M3 S65What's Different from our Stainless Steel Alternative? Weight Savings Sound Change Higher Quality and Stronger Material More Customization, Made to Order Tips made from Titanium or have other options (see below) How Does the Sound Change? (E9x M3) The Tone is Crisp and Cleaner (Closer to F1) The RPM Band has a more Consistent and Linear Sound Drone is Almost Non Existent with titanium and this set up. Very minimal Specifications Built from Titanium,