AST Lowering Springs For BMW 4 435i/440i/430D 03/2014-07/2021, Front 30 , Rear 30 BMW With proper maintenance

With proper maintenance

450 rpm when tested on the Akrapovič dyno against a BMW M240i with a standard stock exhaust

AST’s commitment to quality is evident in the use of premium materials and meticulous manufacturing processes

the ultimate upgrade for performance and style

42mm thick aluminum core

AST Lowering Springs For BMW 4 435i/440i/430D 03/2014-07/2021, Front 30 , Rear 30 BMW With proper maintenanceThe AST Lowering Springs are engineered to enhance your BMW 4 Series 435i, 440i, and 430D models from 03 2014 to 07 2021 by effectively lowering the vehicle's center of gravity by 30 mm at both the front and rear. Manufactured with precision using the highest quality materials and cold coiled on state of the art Wafios coiling machines, these springs provide a reliable and durable solution tailored specifically for your vehicle. Designed as a direct