APR Catback Exhaust System for the Audi S3 Sedan

The APR Catback Exhaust System personalizes your vehicle’s looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished mufflers smooth the exhaust note to a deep growl, without adding restrictions, while our Helmholtz resonator reduces unwanted frequencies. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. A cast 3” to quad 2.5” rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the system, while looking tidy from under the rear bumper. Our cast valve housings enable the vehicle to be fitted with the factory electronic valve actuators, retaining OEM valve operation. Removable 4" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle. Optionally, this system can be configured without rear mufflers and valves at a reduced price point. 

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Quick Facts

• T304 stainless-steel construction
• Argon-back-purged TIG welding throughout
• Single 3" to quad 2.5" mandrel-bent brushed tubing
• Ultra-smooth cast 3" to quad 2.5" splitter
• Brushed-finished straight-through sound-absorption mufflers and Helmholtz frequency reducing resonator
• Optional configuration removes the valves and rear mufflers
• Polished 4" slash-cut exhaust tips (removable and upgradable)
• Cast valve housings and brackets for OEM electronic actuators
• Optional configuration removes the valves and rear mufflers
• Rugged and precise mounting brackets
• OEM style slip clamps and Torca AccuSeal T304 tip clamps
• Direct fit to the OEM and APR Race DP exhaust systems with the included link and reducer pipes
• Low-profile design, suitable for lowered vehicles
• Larger diameter piping compared to stock
• Larger diameter tips compared to stock
• No increase in weight compared to stock and a good weight reduction on the valveless system
• Designed, developed, assembled and quality controlled in-house
• Easy to install
• Limited lifetime warranty