This 2.75” diameter into dual 2.25” BORLA Cat-Back system is tuned for sound and performance specifically for the 5.3L engine in the Silverado and Sierra 1500. For the vehicle owner who is looking for an aggressive and head-turning sound, we recommend our ATAK sound level. It provides a drastic difference in tone and overall volume from the much quieter stock exhaust system while maintaining a drone-free driving experience inside the vehicle. This system has a dual side exit with single 4" round rolled edge tips in a bright chrome finish on T-304 stainless steel on each tail pipe. The system features easy bolt-on installation. BORLA Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology 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. Each system is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit.You can count on BORLA to provide durability, performance, sound, and a Million Mile Warranty.