Making sense of the suspension packages.

8 different suspension packages for a 1990 Miata? That can get confusing. Here's a run-down of what's included in each package, and what each part does. There are some reviews on Miata.net, but the packages may have changed since they were written.

FM springs will lower your car and stiffen the ride. The car will be more responsive, corner with less body roll and will not dive or squat. Basically, it will be more controlled. If you would like to substitute our Ground Control coilover setup for the normal FM springs, add $199 to the price of the package. This applies to all the suspension kits that include our springs. Please call us if you'd like to order this variation.
Tokico Illumina shocks(1990-97 and 1999-05) and Tokico HTS shocks (2006+) are used to control the suspension and stop it from bouncing. Stock shocks cannot control the stiffer FM springs. The Illumina is the shock that's best matched to our springs, and is adjustable so you can tune the ride and handling to your liking.
V-Maxx coilovers give you the ability to set the ride height where you want it, and use a dual-spring setup for good ride, grip and handling. The shocks are not adjustable but are matched to the springs. The V-Maxx setup includes springs, shocks and bumpstops. Due to their shorter shock bodies, they are not compatible with the FM upper shock mounts.
FM sways will make the car corner flatter and be more responsive. The ride height is unchanged. The bars are adjustable so you can do some fine-tuning of the handling balance.
The NB shock converson kit allows you to convert your 1990-97 Miata to the improved suspension designed for the 1999-05 cars.
The FM upper mounts are designed to increase the compression travel in the rear for 1990-97 Miatas, and have a big effect on ride and handling.
Polyurethane front bumpstops will add a bit of travel up front and ease the transition on the bumpstop for a smoother ride and more consistent handling. A full set of bumpstops is included with every 1990-97 suspension kit.