UMI Performance 64-66 GM A-Body 1in Lowering Spring Set Rear bike To achieve this

To achieve this

Fits 2013-2020 BMW 4 Series F32 F33

and input from some of the best import drag race builders in N

And cracking

UMI Performance 64-66 GM A-Body 1in Lowering Spring Set Rear bike To achieve thisA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. These springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides consistent handling characteristics which are important for Auto x and Pro Tour applications while the increase in