FREE DOWNLOAD: Spring Curve Calculator & Database

Data collection is THE critical strength of the best racing drivers and teams. Those who know better understand that if you want to go faster, you need to know what exactly is happening in your vehicle.

But getting that data may not feel straightforward, easy, or even cheap without the proper tools and support. And note-keeping, to some, means sticking strips of tape with measurements on the hauler wall, but there's a better way.

Our Spring Curve Calculator download can serve as a shortcut to expensive spring smasher machines and act as a jumping-off point to begin developing your own spring database.

Download the spring curve calculator & database now!

Use this free tool to do what the pros do!


Penske Racing Shocks wanted to create a simple Spring Curve Calculator tool for our customers as all drivers should have their OWN spring database. Learn more here from our General Manager, Aaron Lambert.


This free Spring Curve Calculator download can help you get ahead of them! Start your own spring database today!

Spring Curve Calculator & Database

Our Spring Curve Calculator download is a simple Excel spreadsheet you can use to document spring curves. This program plots spring curves on a graph for quick comparison rather than just eyeballing numbers and allows you to save those curves and start your spring setup database.

Ditch the tape strips on the walls of your trailer for a better solution.

It's an easier and more efficient way to do what the pros are doing – all you need is a manual hand-operated spring rater and this download. This free Spring Curve Calculator download will allow you to:

  • Easily compare performance on a graph, rather than just eyeballing.

  • Save your spring combinations with notes so you can start to build a database based on your own experiences at certain tracks.

  • Keep track of your spring rates and their changes and compare them (different corners or an individual shock on a motorcycle).

  • Be able to properly test your spring, come up with your rates and plot them on the graph.

  • Allows you to keep notes for:
    • Each spring
    • Preload setting
    • Stacking springs
    • For any type of racing
    • For 2-wheel and 4-wheel vehicles
    • The spring curve of the laps that "felt" the best for future use
    • The baseline for where to start when at the same/similar tracks

Now you, too, can use this tool to help make your suspension tuning and optimizing process a little bit easier.

Download the spring calculator now, and if you have any questions or are ready to take your suspension setup to the next level, reach out to us at, and we'll be glad to help.


Screenshot of the spring curve calculator tool

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Have Questions? We Can Help.
Connect With a Shock Specialist

Sign up for S3, and a PRS Shock Specialist can help you get your database set up over the phone or at-track (Did you know that our shock specialists usually travel with 200 springs?!)