This can vary between makes and models as some vehicles will incur a higher cost than others. As a ballpark figure, replacing your whole suspension system can reach up to $5000 (or even more) in some cases depending on what components are being used. If you use want to upgrade certain aspects of your system then this can obviously be done a lot cheaper and it is worth thinking about this because replacing your whole system might not have the results you want. Sometimes replacing just a few components will have just as noticeable an impact.