AST Lowering Springs For BMW 4 420i/430i 11/2020-, Front 30 , Rear 25 R Estate Machined from a solid billet

Machined from a solid billet of 6061 aerospace-grade aluminium

This makes the AST Lowering Springs an ideal upgrade for those who want to improve their vehicle’s stance and handling characteristics while preserving the smooth ride expected from BMW’s engineering standards

and enhance overall sound character—all without going fully decat

CSF's multi-louvered fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while maintaining proper airflow

Each disc not only weighs less than the OEM part but also features much larger

AST Lowering Springs For BMW 4 420i/430i 11/2020-, Front 30 , Rear 25 R Estate Machined from a solid billetThe AST Lowering Springs are engineered to enhance your BMW 4 Series 420i 430i (from 11 2020 onwards) by effectively lowering the vehicles center of gravity while maintaining a high level of comfort comparable to the original equipment manufacturer (OEM) springs. Manufactured using premium materials and precision cold coiling technology on advanced Wafios coiling machines, these springs ensure durability and consistent performance. Their progressive