AST Lowering Springs For BMW 4 M440i xDRIVE 11/2020-, Front 30 , Rear 25 Category_Side Skirts Precise AFR feedback for stable

Precise AFR feedback for stable closed-loop control and consistent drivability

Complete set of 4 front differential mount bushes

Seven fine-tuning maps for precise optimisation

petrol-like character that makes every gear change and throttle input more exciting

AST Lowering Springs For BMW 4 M440i xDRIVE 11/2020-, Front 30 , Rear 25 Category_Side Skirts Precise AFR feedback for stableThe AST Lowering Springs for BMW 4 M440i xDRIVE 11 2020 are engineered to enhance your vehicles dynamics by lowering the center of gravity while maintaining a high level of comfort comparable to OEM springs. Manufactured using advanced cold coiling technology on state of the art Wafios machines, these springs ensure precise and consistent quality. Designed specifically for this model, they provide a progressive spring rate that improves handling and