Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler - 40004S fits_2015-2020`BMW`4 Series 600 opt ions KW guarantees

600 opt ions KW guarantees an outstanding selection backed by our Limited Lifetime Warranty

More effective efficient and durable than the stock bolt-on to trailing arm type rear sway bar

Sporty feel while maintaining comfort

Q: Is the material truly waterproof

No appointments

Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler - 40004S fits_2015-2020`BMW`4 Series 600 opt ions KW guaranteesHigh quality austenitic stainless steel. Patented, race winning XR 1 Raceline technology. 3 options: Offset Made with the same patented, flow through design as the XR 1 Sportsman oval. The inlet outlet are offset to the same side of the muffler, to accommodate transmission and frame rail interference on some applications Oval BORLAs #1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and