The Borla(r) R&D Team has designed a great performance Cat-Back(tm) system for the Nissan Titan XD. The 2.25" diameter Borla(r) system is True Dual. The muffler contains an internal H-Pipe for increased performance and improved sound. This system delivers a significant improvement in sound that will give your Titan XD a more exciting driving experience. The classic Borla(r) S-Type sound level is specifically tuned for performance and sound on the Nissan Titan XD's 5.6L V8 engine giving the truck a proper V8 growl and the distinct Borla(r) sound with no drone inside tte vehicle. This system features 2 full Tail Pipes (Not a single pipe with dual tips) and 4" round black chrome on T-304 stainless steel tips. Using Borla(r) Stainless Steel Polish p# 21499 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. A system with bright chrome on T-304 stainless steel tips is also available. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. The system is made of T-304 stainless steel and comes with the Borla(r) Million Mile Warranty. Bolt on a Borla(r) and hear the Titan roar!