A4/S4/RS4

PRODUCT DESCRIPTION APR Roll-Control Lowering Springs are designed to improve handling while delivering a stylish visual upgrade to the vehicle.  ...

PRODUCT DESCRIPTION The APR High Pressure Fuel Pump (HPFP) dramatically increases the maximum volume of fuel the HPFP can deliver.  In doing so, t...

PRODUCT DESCRIPTION After years of research, testing and competitive analysis, APR is pleased to announce a technical partnership with Brembo; the...

PRODUCT DESCRIPTION APR’s Big Brake Upgrade is an ultra-durable, feature-packed solution specifically tailored to each vehicle.  The brakes provid...

PRODUCT DESCRIPTION The APR Exhaust Valve Remote lets you override the factory exhaust valve operation to fully open the exhaust valves at the pre...

PRODUCT DESCRIPTION The APR CPS Fit Kit is required in order to install the APR CPS System on pre-facelift B8 and C7 Audi models. The Fit Kit is a...

PRODUCT DESCRIPTION The APR Intercooler System for the Audi B9 S4 and S5 3.0T is a massive front mounted upgrade that dramatically reduces intake ...

PRODUCT DESCRIPTION  *Pre-faclift models (up to 2012) require Fit Kit - Please see Fit Kit MS100136 or ES3219342 for a complete installation* P...

APR’s Roll-Control Front Stabilizer Bar End Links improve handling and response through the use of APR's new ball joints, intended for street use....

PRODUCT DESCRIPTION Average lowering front: 1/2-3/4", rear: 1/2"-3/4" Please Note: Only available for purchase and shipment in the United States...

PRODUCT DESCRIPTION  The APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand-crafted T304-stainl...

PRODUCT DESCRIPTION The APR Intercooler System for the Audi RS3 Gen2 Evo is a massive front mounted upgrade that dramatically reduces intake air t...

APR’s Forged Wheels are manufactured using the latest strengthening and weight savings techniques to provide an attractive solution ready for the ...

APR’s Big Brake Upgrade is an ultra-durable, feature-packed solution specifically tailored to each vehicle. The brakes provide outstanding stoppin...

After years of research, testing and competitive analysis, APR is pleased to announce a technical partnership with Brembo; the world’s foremost le...

PRODUCT DESCRIPTION APR Roll-Control Stabilizer Bars are designed to improve corner handling without diminishing ride quality. This simple, yet ef...

PRODUCT DESCRIPTION  The APR Ultracharger System dramatically increases horsepower and torque, and maximizes the power potential of the 3.0 TFSI....

PRODUCT DESCRIPTION  The APR Boost Hose System is a comprehensive, direct replacement upgrade, to the factory rubber hoses found in the charge pi...

The APR Boost Tap for the 1.8T and 2.0T EA888 Gen 3 engines is a simple, yet elegant solution for referencing boost pressure and vacuum as is comm...

The APR Carbon Fiber Intake System is an attractive high-performance upgrade designed to increase performance by letting the engine breathe more f...

The APR Carbon Fiber Intake System is an attractive high-performance upgrade designed to increase performance by letting the engine breathe more f...

APR’s Flow-Formed Wheels are manufactured using the latest strengthening and weight savings techniques to provide an attractive solution ready for...

The APR Intercooler System is a OEM-location upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides inc...