Due to their optimization process, Hyperco springs utilize fewer coils, giving them both less weight (less unsprung mass is a good thing) and more compressibility before coil-bind. Additionally, each pair of springs is rate tested and matched so you are getting a genuine matched suspension based on true measurements, not what the factory was hoping to make.
Spec E46 Spring Package includes:
- Front 2.25″ ID 6″ Free Length 750 LB Springs (PN: 186A0750)
- Rear 2.25″ ID 5″ Free Length 850 LB Springs (PN: 185A0850)