Includes Hybrid models. Will NOT fit with optional bed step. This Cat-Back system features a True Dual design with two full tail pipes that is unique in the industry. It was designed specifically for the Tundra 3.4L. The system features the aggessive BORLA ATAK muffler and Polyphonic Harmonizer Technology inside the muffler assembly which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound without any drone. The system also features a Merge X-Pipe for increased performance and improved sound. The system is finished off with 4.5" black chrome on T-304 stainless steel tips. Systems with bright chrome on T-304 stainless steel tips and carbon fiber with black anodized center tips are also available. It is built with premium, high-quality austenitic T-304 stainless steel for a sharp appearance and long life. Our computer numerical control (CNC) manufacturing techniques ensures accurate fit and maximum performance. Mandrel bends ensure maximum flow & power. Best of all, BORLA stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.System Features: Cat-Back Exhaust System 2.5" True Dual Design ATAK Sound Level No Drone Polyphonic Harmonizer Technology Dual 4.5" Black Chrome On T-304 Stainless Steel Tips T-304 Stainless Steel Million-Mile Warranty