034Motorsport Billet Aluminum Front Strut Brace for Audi B9

034Motorsport is proud to offer our Billet Aluminum Front Strut Brace for the B9 Audi A4/S4, A5/S5/RS5 & Allroad! The factory Audi strut brace is made of thin stamped aluminum, allowing for lateral deflection of the strut towers and chassis flex...

034Motorsport Dynamic+ Lowering Springs for B9 S4 & S5

Dynamic+ Lowering Springs were thoroughly evaluated on the street and track on 034Motorsport's B9 Audi S4 Development Vehicle, and by independent Audi enthusiasts before release. The selected spring rates, unique dual-rate spring design, and ride height...

034Motorsport Dynamic+ Coil Spring Sleeves

Dynamic+ Coil Spring Sleeves are designed to help dampen noise and reduce paint wear caused by contact between coils on springs under heavy load, while maintaining a constant spring rate throughout the range of travel. These coil spring sleeves are...

RacingLine Sport Springs for B9 S4

*Fitment note - Will NOT fit B9 S5 or S5 Sportback* If you use your S4 on a daily basis and are only looking to uprate one aspect of your car, you can't do better than our Sport Springs.  They replace the car's four standard springs with...

RacingLine Stud and Nut Conversion Kit

Remove and install your wheels at the track all the time? Then you’ll know how frustrating the factory wheel bolts can be. Lining up the bolt holes, bashing the wheel against your beautiful brakes calipers, then cross-threading the bolts at...

H&R Sport Springs for B9 A5 & S5

Every spring produced by H&R comes from the H&R ISO 9001 certified engineering and manufacturing facility in Germany. All H&R springs are produced from a special 54SiCr6 spring steel, which has strength rated at 290,000 psi resulting in...

H&R Sport Springs for B9 A4 & S4

Every spring produced by H&R comes from the H&R ISO 9001 certified engineering and manufacturing facility in Germany. All H&R springs are produced from a special 54SiCr6 spring steel, which has strength rated at 290,000 psi resulting in...

H&R Street Performance Coilovers for Most B9 A4/S4 & A5/S5

*Fits vehicles with 48.5mm Front Struts ONLY (Build date from to 7/11/16 to current)* *Vehicles with EDC (Electronic Dampening Control) will lose functionality and have warning lights* H&R coil overs are engineered for street use. Unlike traditional...

H&R Street Performance Coilovers for Early B9 A4/S4 & A5/S5

*Fits vehicles with 53mm Front Struts ONLY (Build date up to 7/11/16)* *Vehicles with EDC (Electronic Dampening Control) will lose functionality and have warning lights* H&R coil overs are engineered for street use. Unlike traditional twin-tube shock...

Bilstein B16 PSS10 Coilovers for Early B9 A4/S4 & A5/S5

*Fits vehicles with 53mm Front Struts ONLY (Build date up to 7/11/16)* *Vehicles with EDC (Electronic Dampening Control) will lose functionality and have warning lights* The engineers at BILSTEIN have created the ultimate race inspired...