Bilstein B8 2001 BMW 525i Base Sedan Rear 46mm Monotube Shock Absorber Fuel Delivery>Fuel Pressure Regulators This air intake system was

This air intake system was developed to accommodate the engine's factory emissions control devices including the mass airflow sensor

The System Is Expandable To Add Up To Two Additional Analog Inputs For Parameters Not Monitored By Your Vehicles Computer Systems

The Exhaust Backpressure install kit is engineered to provide backpressure readings without sacrificing sensor longevity due to extreme operating conditions

View the 21-772C vehicle applications to determine the legal status for each vehicle

For the front kit

Bilstein B8 2001 BMW 525i Base Sedan Rear 46mm Monotube Shock Absorber Fuel Delivery>Fuel Pressure Regulators This air intake system wasBilstein B8 Performance Plus dampers are a performance upgrade to OE dampers designed to be paired with aftermarket lowering springs. These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B8 Performance Plus dampers are the ideal solution for pairing with a lowering spring for improved