The MagnaFlow Chevrolet Avalanche Street Series 15561 brings out the personality of your 5.3L 2010-2013 Chevrolet Avalanche with our signature resonant, powerful engine tone and dyno-proven performance. Thanks to its fast-flowing, mandrel bent 3in. main piping and 1 Straight-Through mufflers ending in a Single Passenger Side Rear exit with 3.5 x 5.5in. Polished Welded-Double Wall-Straight Cut-Rolled Edge tips, this Chevrolet Avalanche exhaust kit has the performance chops to match its sporty sound and appearance. Upgrade your ride to the next level with an exhaust that has the pipes to put other Chevrolet Avalanches to shame. With this system your vehicle will be producing Moderate exterior and Mild interior sound levels while leaving other cars and trucks feeling envious at every stoplight. Exhaust kit 15561 features a cat-back layout that replaces your rides stock exhaust components from near the catalytic converter on back. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15561 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlows 1-year limited finish warranty and limited lifetime construction warranty.