Borla Universal XR-1 Multi-Core Racing Muffler - 40741 fits_2003-2008`Audi`S4 【AFTER-SALES SERVICE】— We have high-quality

【AFTER-SALES SERVICE】— We have high-quality after-sales service

ABS structural core for OEM-grade strength and stability

Positioned between the Touring and the ATAK(r)

50 degrees positive caster for a ready-to-run

Borla Universal XR-1 Multi-Core Racing Muffler - 40741 fits_2003-2008`Audi`S4 【AFTER-SALES SERVICE】— We have high-qualityXR 1(r) Multi Core Racing Muffler. 4" Center Inlet 4" Center Outlet 6. 25" Round x 16" Long Body 21" Overall Length. Long body design works well on SUV & truck applications but can be used on a wide range of vehicles including rotary engine equipped vehicles. It features BORLA(r)'S patented Multi Core 6 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1(r) mufflers flows better than straight tubing. Recommend for high