Expreme Ti Full Titanium "Type-R" Cat-Back Exhaust System for 2017+ Honda Civic Type-R by Tomei Full titanium construction makes this exhaust light, strong and durable. Features a 115mm (4.53") burned blue titanium tip. The mid section is connected using springs and clamps rather than conventional flanges. The flexibility of the spring helps prevent cracks from vibrations. While the springs provide a secure connection, the clamp bands and slits on the pipe ends offer additional reassurance when installing.  Includes all necessary components for installation including new bolts and nuts. Bolt Smooth Paste is also included to help prevent the bolts from becoming seized under heat. Features 100% Titanium For A Lightweight, Strong and Durable Design 3.15" (80mm) Main Piping Diameter & 4.53" (115mm) Tip Diameter "Type R" Version Has No Silencer Near the Tip and The Most Weight Savings 4-Piece Assembly Connected Using Springs and Clamps Includes All Components Necessary for Installation Applications 2017 - 2021 Honda Civic Type-R What's In The Box? 1 - Expreme Ti "Type R" Exhaust All Necessary Mounting Components Warranty Manufacturer Limited Warranty