Bilstein B4 OE Replacement (Air)-Air Suspension Strut (44-191177) 8021 and a DME/ECU Software Upgrade

and a DME/ECU Software Upgrade

lock on both the left and right sides

Upgrade tubes for both hot and cold side of the intercooler

Manufactured with premium materials for enhanced strength and style

The 6-pad spring-centered disc is recommended for larger clutch sizes to absorb more heat

Bilstein B4 OE Replacement (Air)-Air Suspension Strut (44-191177) 8021 and a DME/ECU Software UpgradeBilstein B4 OE Replacement (Air) dampers are designed to replace the original air suspension systems on many European brand vehicles. Bilstein is an OE supplier for air suspension systems; the quality of these products meets, and typically exceeds, the standards set forth by the vehicle's manufacturer. Bilstein B4 OE Replacement (Air) dampers are designed to connect directly into the original connectors on the vehicle, ensuring modification free