3" Springs

F-O-A Shock Absorbers is proud to introduce Suspension Spring Specialists new line of 3” ID Blue Coil Springs! Suspension Spring Specialists have been building high quality, high performance coil springs for over 20 years. This family owned company has made the commitment to FOA to supply us with a wider variety of spring rates in 3” ID springs than anyone else! With sizes from 5" to 18" not only will you find the best selection in spring rates, but at a price unmatched by anyone else.

There's no finer guarantee in the spring industry than the one you receive from Suspension Spring Specialist, Inc.  If any spring is found to be defective in material or workmanship, it will be replaced at no cost to the purchaser.


Blue Coil’s parts numbering system is as follows…
(We’ll use part number 14x450-3ID as our example.)

1. The first 2 numbers denotes the spring’s free length. (14 denotes a 14” long spring)
2. The second set of numbers denotes the spring rate in pounds. (450 denotes a 450 lb per inch spring rate)
3. The last number/letter combo shows the inner diameter size. (3ID denotes a 3” inner diameter spring…..the proper size for an FOA coilover)

So our example of a 14x450-3ID is a 14” long spring with a spring rate of 450lb and an ID of 3”.

We typically recommend using a lower (Main) spring that is 2" longer than the shocks travel length, and an upper (Tender) spring that is 2" shorter than the shocks travel length.  (ie. A 12" travel shock will use a 14" Main spring and a 10" Tender spring) If the spring rates you need are not available using the longer lower/shorter upper method, you can use 2 equal length springs as needed. (ie. A 12” travel shock can use 2 12” springs)

Be sure to use our Spring Rate calculator to help in deciding what springs to use for your application.

--Springs are typically shipped separately from the shocks, and may arrive at a different time. --