(Note: Spring rates and drop amount vary by different vehicle application and chassis load.). - 2003-2011 Mazda RX-8. Certain applications may require trimming of the bump stop to allow for full shock travel .
Soft spring rates are the only down side but you should know this before purchasing. These are not performance oriented lowering springs, just for looks and a decent ride. They feel almost softer than stock. Overall they give a nice drop and are probably the cheapest lowering springs you can buy.