EXCEPT ZR2 & AT4X models. Fits Factory Split Rear Exit vehicles ONLY. Tips NOT included, reuse Original Equipment (O.E.) tips. BORLA® systems with tips are also available. This 2.5" diameter inlet into 2.75" pipes Cat-Back™ system features a "True Dual" design which is unique in the industry. Installation REQUIRES cutting the O.E. Y-Pipe. The system has the famous BORLA® "S-Type" sound level with no drone inside the vehicle. The muffler contains and internal X-Pipe for increased performance and improved sound. BORLA® Cat-Back™ and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA® Sound of Power respected by motoring enthusiasts everywhere. 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. Give your 6.2L Silverado or Sierra the sound it deserves, bolt on a BORLA®. Give your Silverado or Sierra the performance and sound it deserves, bolt on a BORLA®. 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.