Choose your own configuration along with your choice of exhaust tips and more!
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For Sedan models only.
Choose your own configuration along with your choice of exhaust tips and more!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For Sedan models only.
Control your exhaust valves with the click of a button! Includes a standalone vacuum pump, wiring, vacuum hose, and controllers.
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This product was last offered at the strikethrough price on
06-13-2026
Choose between a 2.5" or 3.0" valved mufflers to complete your custom exhaust.
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2.25" stainless steel with dual 100mm 'GT100' style polished exhaust tips
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This product was last offered at the strikethrough price on
06-30-2026
Add an aggressive exhaust note to your B6 S4 so you can hear that V8 roar!
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This product was last offered at the strikethrough price on
06-13-2026
For Manual Transmissions - Comes with cats and 2.5" cat back
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For Automatic Transmissions - Comes with cats and 2.5" cat back
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Stainless steel resonated cat-back exhaust system with dual round, polished tips
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This product was last offered at the strikethrough price on
05-02-2026
Add an aggressive exhaust note to your B6 S4 so you can hear that V8 roar!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
06-13-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
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2.25" stainless steel with your choice of tip style
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2.5" stainless steel with dual 4" polished stainless tips
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Double wall stainless steel. Single 2.25" inlet, Dual 3" outlet.
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2.25" stainless steel with your choice of tip style
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Achieve perfect exhaust fitment!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
06-13-2026
Double wall stainless steel. Single 2.25" inlet, Dual 3" outlet.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms