IRL F97 F98 X3M X4M Downpipes

Upgrade your vehicle's performance with IRL LLC downpipes, which alleviate back pressure from stock catalytic converters. By switching to our downpipes, your turbos will spool faster and reach peak power. A tuned S58 can see a 30HP boost with stock turbos. The flex pipe section reduces strain and vibrations caused by the downpipes. Other features include smooth bends for optimal airflow and a recommended professional installation. Resonated , Catless, 200-cel downpipes will cause a Check Engine Light. Professional installation Recommended   200 cel Heatshiled coming May 2026    It is a violation of Federal and Illinois State laws to use this product in a manner inconsistent with it’s labeling.  Our products are "Legal Only For Racing Vehicles Which May Never Be Used, Or Registered or Licensed For Use, Upon A Highway."     These products are designed for off road  purposes only It is NOT designed or intended to be used in any way that may violate any laws. IRL LLC will not be responsible for the use of Merchandise.