ISR Performance 98-05 Lexus GS300 Single GT Exhaust

What you get with the ISR Performance Single GT Exhaust for your 1998-2005 Lexus GS300 is a complete cat-back system. This means it replaces the factory exhaust from the catalytic converter all the way back to the rear bumper, including the muffler and the exhaust tip. It’s designed to give your GS300 a more aggressive exhaust note and improved flow compared to the stock setup.

This cat-back system is constructed from 304 stainless steel, which is known for its strength and resistance to corrosion, especially important for exhaust components that deal with heat and moisture. The single muffler design and the GT-style tip are intended to provide a distinct sound profile and a cleaner look. The piping diameter is 3 inches, which is larger than stock and helps reduce backpressure, allowing the engine to breathe a bit easier. This can lead to a more responsive feel, particularly when you get on the throttle.

Installing a cat-back exhaust like this is a common way to personalize the sound and appearance of your vehicle. While it's a bolt-on system, meaning no welding is typically required, it's a good idea to have a helper and ensure you have the necessary tools, like jack stands and wrenches, to safely complete the job. Refer to the manufacturer's installation instructions for specific details on mounting and any hardware that might be included or recommended.