Dinan Adjustable Performance Coil-Over Suspension System BMW F90 M5     For the driver that demands the best out of their vehicle.  The Dinan Adjustable Coil-Over Suspension was bred in the race lab but refined on the street for maximum versatility. No matter the environment, the traction that is bestowed upon the vehicle from the improved suspension will inspire new found confidence when running at higher speeds. From the substantial reduction in body roll as well as reduction of dive under braking and squat under acceleration, Dinan guarantees you superior handling, performance, and comfort.     Dinan's design retains the superb factory electronic shocks but swaps the springs to a more aggressive formula and implements threaded collars to allow the user to change the ride height. While a stiffer spring is typically associated with diminished ride quality Dinan has also swapped the progressive rate rear springs in favor of a much more predictable ... read more