Please note that this is an axle back system - this is not a full exhaust system.We selected Invidia as one of our exhaust offerings for IS250/350 3rd generation, because based on the feedback we received from our customers, this is the best cat-back exhaust system for the money on the market. This cat-back has impressive titanium burnt tips. The flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich, deep, sporty sound. The use of SUS304 polished stainless steel piping, Mandrel bent to shape, state of the art CNC machine made flange, Robot TIG welding and double wall polished stainless steel or Titanium tips, provides outstanding durability and appearance. Other features include: