2021 Audi S4 Premium Plus Performance Parts

SPOOL Race Intercooler for Audi B9 S4 & S5 Unlock the full potential of your Audi B9 S4 or S5 with the SPOOL Race Intercooler, engineered to deliver consistently lower intake air temperatures, increased horsepower, and reliable performance under the most demanding conditions. Designed...

The Eventuri Carbon Intake System Replacement Filter - Type B is engineered to restore the airflow, filtration efficiency, and performance of compatible Eventuri intake systems. Designed specifically for Eventuri's patented reverse-mounted filter architecture, this genuine replacement filter maintains the airflow characteristics and filtration performance...

The Eventuri Air Filter Cleaning Kit is a dedicated maintenance solution engineered specifically for Eventuri air filters. Developed to support Eventuri's patented reverse-mounted filter architecture, this kit helps maintain consistent airflow, filtration efficiency, and long-term durability while preserving the performance characteristics engineered into every...

The Eventuri Black Carbon Intake System for the Audi B9 S4 and S5 was engineered to deliver measurable performance gains while maintaining low inlet air temperatures in a heat-sensitive engine bay. Rather than adopting an open cone layout which would increase airflow at the...

Enhance the visual appeal of your Audi S4 with our Carbon Fiber Rear Diffuser. This carbon fiber rear diffuser for your Audi is an aggressive addition to make your vehicle stand out among others on the road. This carbon fiber rear diffuser is constructed by enthusiasts like yourself...

Transform the rear of your Audi B9 A4 or S4 with this GTX Carbon Fiber Trunk Spoiler and be sure to turn heads along the road. Installation is a breeze only requiring 3M double sided tape and is 100% reversible if you choose to remove the spoiler. This spoiler is...

Are you looking to improve the head on and side profile appearance of your Audi B9 A4/A5 S4/S5? RW Carbon has you covered with these beautifully constructed carbon fiber mirror replacements. Coming with or without a lane assist option, these are not the typical mirror covers, but...

Are you looking to upgrade rear end of your Audi B9 A4 or S4? RW Carbon has just what you want with this carbon fiber trunk spoiler. Within minutes it will completely transform your Audi A4 or S4. Installation is a breeze, only requiring...

Tired of the front end of your Audi B9 A4 or S4 looking stock and boring? RW Carbon has your solution with this carbon fiber front lip spoiler. There are no modifications required to get it installed and only requires some 3M tape and self-tapping screws. This...

Fed up with the mundane appearance of the front end on your Audi B9 A4 or S4? RW Carbon provides the perfect remedy with this authentic carbon fiber front lip spoiler. Unlike the imitation materials you might stumble upon on Ebay, this spoiler is...

Custom built multi-function digital boost gauge and more for the B9 generation (2017-2024) Audi A4, S4, RS4, A5, S5, and RS5, including 35 TFSI, 40 TFSI, 45 TFSI, S4 3.0 TFSI, RS4 2.9 TFSI, 35 TDI, 40 TDI, 45 TDI, S5 3.0 TFSI, and...

Audi B9 S4 & S5 Valved Exhaust System Full T304 Stainless Steel System with Electronic Valve Control Overview The Audi B9 S4 and S5, powered by the EA839 3.0L V6, have impressive performance potential - but the stock exhaust hides much of this engine’s...

Brembo brake pads reflect the brand?s racing heritage and engineering excellence, delivering the ideal balance of performance, safety, and comfort for every driving style. Designed with carefully selected friction materials, they provide reliable braking across a wide variety of vehicles, from daily commuters to...

Brembo brake rotors embody the brand?s legacy of innovation, precision, and racing pedigree, delivering superior braking performance, durability, and safety for every vehicle and driving style. Designed and manufactured with the same engineering rigor found in Brembo?s original equipment for the world?s leading automakers,...

The Road & Track program demonstrates Öhlins' ability to engineer the ultimate suspension system for the spirited driving enthusiast. Öhlins’ Dual Flow Valve technology (DFV) allows for transformed chassis control while maintaining a refined ride quality unsurpassed from the factory or aftermarket. Driver confidence...