Looking for an affordable exhaust system for your Audi S4?
System features polished T-304 stainless steel tips.
BORLA® Cat-Back™ & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower.
Increased exhaust velocity adds power, driving excitement, fuel economy, and an aggressive exhaust note without drone.
Each system is built from premium T-304-austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability.
Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit.
Audi S4 performance upgrades at MGC.