APR 18-25 Audi S4/S5 (B9) Catback Exhaust System

The APR Catback Exhaust System for the Audi B9 S4 and S5 is a complete, high-performance exhaust solution that runs the entire length of the vehicle from the catalyst back. Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance, elevate sound, and enhance aesthetics with customizable exhaust tips that are sure to make a statement. Crafted from premium materials and built with advanced manufacturing techniques, this system is designed to withstand harsh conditions and deliver lasting performance. Expect a bold, aggressive growl at wide-open throttle, along with an impressive gain of 10 horsepower and 12 FT-LBS of torque to all four wheels!

This Part Fits:

Year	Make	Model	Submodel
2019-2025	Audi	S4	Premium
2018-2025	Audi	S4	Premium Plus
2018-2025	Audi	S4	Prestige
2019-2024	Audi	S5	Premium
2018-2024	Audi	S5	Premium Plus
2018-2024	Audi	S5	Prestige
2020-2025	Audi	S5 Sportback	Premium
2018-2025	Audi	S5 Sportback	Premium Plus
2018-2025	Audi	S5 Sportback	Prestige