Audi B9 S4 Quattro 3.0T
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
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Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology® resonators in the rear.
Stainless Steel exhaust tips featuring swivel attachments for maximum adjustability. 2.5" Swivel Inlet / 4.0" Double Wall, Slant Cut Outlet
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Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
Stainless Steel exhaust tip featuring swivel attachment for maximum adjustability. 2.5" Swivel Inlet / 3.5" Double Wall, Slant Cut Outlet
10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
Aggressive sound, quality finish, reliable operation, straightforward install, and affordable fun.
5X Entries For Our 25th Anniversary Sweepstakes!
Lifetime Replacement
Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note
This product was last offered at the strikethrough price on
03-08-2026
Lifetime Replacement
Stainless Steel exhaust tips featuring swivel attachments for maximum adjustability. 2.5" Swivel Inlet / 4.0" Double Wall, Slant Cut Outlet
10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
Check-Engine Light free! An emissions-friendly approach to exhaust upgrades!
5X Entries For Our 25th Anniversary Sweepstakes!
Lifetime Replacement
Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems.
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
Change out your ECS Tuning B8/8.5 S4/S5 or B9 A4/S4 Valved Exhaust from resonated to non-resonated!
10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
06-13-2026
Lifetime Replacement
Carbon Fiber exhaust tip featuring swivel attachment for maximum adjustability. 2.5" Swivel Inlet / 4.0" Double Wall, Slant Cut Outlet
10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
2.50" stainless steel with quad GT-90 titanium tips
Fits models without factory rear sports differential
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
2.50" stainless steel with your choice of tip style
Transform your exhaust note
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
2.50" stainless steel with your choice of tip style
2.50" stainless steel with quad GT-100 Cerakote black tips
Fits models without factory rear sports differential
For vehicles without a sport differential
This product was last offered at the strikethrough price on
08-17-2026
Lifetime Replacement
