Installing a high flow catback exhaust is a quick way to pick up horsepower and torque. A catback exhaust will also give your Audi B6 S4 4.2L V8 a sportier tone. All Milltek catback exhaust systems feature a bolt-on design and mate seamlessly with your factory or most aftermarket downpipes.
The resonated catback exhaust features a center resonator and rear muffler producing a more refined and quieter exhaust tone while the non-resonated systems incorporate only a rear muffler and provide a louder more aggressive tone compared to the resonated systems.
Milltek Sport exhausts are produced in high quality type-304 aircraft grade in dual 2.25" stainless steel tubing. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek systems are increased in bore to ensure ultimate performance without the loss of mid-range torque.
Available Tips: Dual 100mm Polished Tips in two styles, GT100 and 100mm Jet.
-Available in dual 2.25"
-Highest quality aircraft-grade stainless steel
-Sharper throttle response
-Substantial weight savings
-Reduced back pressure for max performance - no loss of low end torque!
Milltek Part Numbers
SSXAU295 - 2.25" Non-Resonated Cat-back Exhaust (Polished GT100 Tips)
SSXAU038 - 2.25" Non-Resonated Cat-back Exhaust (Polished Jet Tips)
SSXAU296 - 2.25" Resonated Cat-back Exhaust (Polished GT100 Tips)
SSXAU100 - 2.25" Resonated Cat-back Exhaust (Polished Jet Tips)
⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov