Our Midpipes for the G80 M3 are designed as a cut-n-clamp completely eliminating the factory resonators and twin-pipe set-up for a single 3.5″. This not only reduces weight from the exhaust system but also allows more clearance for serviceability. As the factory muffler remains un-touched, the exhaust note only increases marginally while the valves are closed allowing for great livability for day to day use.Constructed in Durable T-304 Stainless Steel, our exhaust components are protected with a 1-year warranty against manufacturing defectsApplications: – BMW M3 G80 2021+Specifications and Features: – T-304 Stainless Steel – Cutting Factory Exhaust Required – 1-Year Warranty Against Manufacturer Defects – Closed Course, Off-Highway Use OnlyNOTE: All Megan Racing Exhaust and Suspension products are deemed for “Closed Course, 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.