Flyin` Miata springs
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FM springs are well known for providing a good balance of street ability and track performance. Their combination of ride height - giving the suspension room to work - and spring rate means your Miata will ride and handle better than you would expect from a set of performance springs.
There`s more going on than you think, though. See that section with the tighter coils? Those are designed to act as a secondary spring, keeping the spring from going loose under full droop. While these rates might sound high compared to some other springs on the market, they are stiff enough to keep your car off the bumpstops. Softer springs will often give a worse ride because they allow you to blow through your suspension travel and end up on the stops. We`ve specified a powdercoat with a high zinc content for extra corrosion resistance, too.
How much will they lower your car? We can`t tell you, because Mazda changed the ride height of Miatas over the years. However, if you measure from the center of the wheel to the fender lip, you can compare your car to the final result. It`s not a huge drop but once you drive the car you`ll appreciate how well it works.
Specifications for the 1990-05 cars
Front springs: 318 lb/in
Rear springs: 233 lb/in
Front ride height: 12.5"
Rear ride height: 13"
Specifications for the 2006 and later cars
Front springs: 300 lb/in
Rear springs: 196 lb/in
Front ride height: 14"
Rear ride height: 13.5"
Set of four. Not recommended with stock shocks - the higher spring rates are too much for stock shocks to handle. Also not recommended for the combination of Koni Sports and FM upper rear mounts on the 1990-97 cars, which can result in coil bind if too short a bumpstop is chosen. A 1999-05 spring is shown in the picture.
Warning: If you run these springs on the stock Bilstein shocks that come in the `04-`05 Mazdaspeed, the rear ride height will be high, around 13.5, due to the Bilstein lower perch being higher than most other shocks.
Compatible with both soft top and power hardtop Miatas. The spring rates of our springs are high enough that the extra 80 lbs doesn`t make a significant difference. Please note that the car needs to be on its wheels (and rolled back and forth a few times) when the various suspension bolts are tightened up, or this will lead to a high ride height and rapid bushing failure. We`ve also heard of people installing the removable perch on 2006+ Bilstein Sport shocks upside down, leading to a ride height approximately 2" above normal. This is not a problem with the Tokico HTS shocks we use in our packages.