Made of aluminized heavy-duty steel tubing for durability and extended service life T-304 polished stainless steel slash cut tips create less restriction and turbulenceflow path changes for increased power and torque! Dual side exit (behind rear tire) looks great and won't affect trailering Quieter in the cab than competitive systemsyou get big block, aggressive, deep tone sound at the tailpipe where it belongs! Hassle free, bolt-on installationzinc-plated clamps and factory style hangers included Superflow mandrel-bent tubing muffler maintains constant exhaust through the bend for oustanding performance. Muffler is fully welded, fully baffled and chambered for better volume, efficiency and unrestricted flowno packing or screen to blow out. 50-state emissions legal. No hiss, vibration or rumble common to other systems. Fuel economy may improve as your engine becomes more fuel efficient. Kit includes all pipes and mufflers needed behind the catalytic converter, slash cut highly polished T-304 stainless tips (sport truck systems include sport truck tips) and necessary hardware. Will not void your factory warranty. Limited lifetime warranty.