Up for sale is a set of Progress Technology Springs for soft top ND Miata.
These are brand new in original packaging. $175 Shipped
From Good-Win Website;
The easiest way to lower your soft top MX5! If you have RF version see our springs for RF. These springs result in just about a 1" lower ride height than stock. Spring rates are about 20% stiffer than stock, not close to double like some other options so the result is a car with a great looking ride height that still has plenty of ground clearance for every day roads and a nice smooth ride similar to stock with better control of the body motion when turning and braking.