Designed as an OEM replacement Mid-Pipe that can be used in conjunction with the OEM Axle-Back section or majority aftermarket Axle-Back system. Our mid-pipe for the GR Corolla is constructed of durable T-304 Stainless Steel that is lighter than the OEM piping and larger in diameter as well.Applications: – Toyota GR Corolla 2023+Specifications and Features: – T-304 Stainless Steel – Direct Bolt-On – Inlet Diameter: 64mm – 1-Year Warranty Against Manufacturer Defects – Closed Course, Off-Highway Use OnlyNOTE: All Megan Racing Exhaust and Suspension products are deemed for “off-road 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.