Want to modify or upgrade your 2018-2020 Audi S4 with aftermarket catback? At OGTuners.com we have a great selection of aftermarket performance parts for your Audi S4. We have 8 catback parts available in our store with free shipping to the Continental US.
AWE Tuning Cat-Back SwitchPath
 $3,460.00 3025-42030AWE Tuning Audi B9 S4 SwitchPath Exhaust - Non-Resonated (Silver 102mm Tips) OUT OF STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
 $3,510.00 3025-43034AWE Tuning Audi B9 S4 SwitchPath Exhaust - Non-Resonated (Black 102mm Tips) IN STOCK - LOW 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
AWE Tuning Cat-Back Touring
 $2,630.00 3010-42056AWE Tuning Audi B9 S4 Touring Edition Exhaust - Non-Resonated (Silver 102mm Tips) OUT OF STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
 $2,685.00 3010-43050AWE Tuning Audi B9 S4 Touring Edition Exhaust - Non-Resonated (Black 102mm Tips) IN STOCK - LOW 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
AWE Tuning Cat-Back Track
 $2,010.00 3010-42054AWE Tuning Audi B9 S4 Track Edition Exhaust - Non-Resonated (Silver 102mm Tips) OUT OF STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
 $2,065.00 3010-43048AWE Tuning Audi B9 S4 Track Edition Exhaust - Non-Resonated (Black 102mm Tips) IN STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
MBRP Catback Exhaust 304
 $1,259.99 S4607304MBRP 18-21 Audi S5 Coupe/S4 Sedan T304 SS 2.5in Cat-Back Quad Rear Exit Exhaust - SS Tips IN STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |
 $1,364.99 S46073CFMBRP 18-21 Audi S5 Coupe/S4 Sedan T304 SS 2.5in Cat-Back Quad Rear Exit Exhaust - Carbon Fiber Tips IN STOCK 2018-2024 Audi S4 Premium Plus / Prestige 2019-2024 Audi S4 Premium |