Megan Racing's exhaust systems replaces the typically quiet and restrictive factory muffler and exhaust components with a larger, free flowing straight-thru type muffler. Whereas OEM muffler constructions typically rely on multiple chambers to bounce and absorb sound frequencies. This results in the increase of backpressure as exhaust gasses are deflected back and forth robbing engine response and power. Megan Racing Supremo Exhausts system utilize straight-thru perforated glass-pack mufflers dramatically decreasing exhaust backpressure as the gasses are allowed a straight, unrestricted passage while sound frequencies are absorbed by the glass-pack fiber material providing a nice, mellow tone. Comprised of 100% T-304 stainless steel, Megan Racing exhaust components are designed to last the test of time and protected with a 1-year warranty against manufacturer defects. Applications: Lexus GS 300 / 350 06-12 Specifications and Features: 2.5″ diameter tubing Dual 4″ Titanium tips Direct bolt-on application 1-Year Warranty Against Manufacturer Defects NOTE: All Megan Racing Exhaust and Suspension products are deemed for “closed course and off highway use only”– please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws. All Megan Racing exhaust system components will alter and affect the vehicle’s overall sound in pitch and volume. All to which is subjective in manner. Megan Racing will not claim responsibility and/or accept returns based on an individual’s personal preference.