EXCEPT ZR2 AT4X models. Factory Split Rear Exit ONLY. This system features bright chrome on T - 304 stainless steel tips. This Cat - Back(tm) system by BORLA(r) features a True Dual design which is unique in the industry. Installation requires cutting the factory Y - Pipe. The system has the famous BORLA(r) S - Type sound level. The muffler contains an internal H - Pipe for increased performance and improved sound. It is built with premium, high - quality austenitic T - 304 stainless steel using computer numerical control (CNC) manufacturing techniques that ensures accurate fit and maximum performance. All this without the annoying drone often associated with performance exhaust systems. Best of all, BORLA(r) 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.