Buy Now     

There are four steps to purchase a ReStackor code key:

  1. Download and install the ReStackor demo .

    • Verify the software operates as expected and is compatible with your system.

  2. Get your user key from the demo, instructions are here .

  3. Purchase a code key through the PayPal links below.

    • Enter your User key in the box provided below

  4. Your ReStackor code key will be emailed to you. Instructions for entering your code key are here (bottom of the page).

User license agreement and warranty are at the bottom of this page.

ReStackor pro       $83   

Multi-physics simulation computing shim stack stiffness based on the stack configuration and fluid dynamic flow losses through the suspension circuits to determine damping force as a function of suspension velocity.

Enter User key here:

Suspension Response       $42

Add on module to ReStackor pro. Determines suspension link ratio, chassis and wheel bottoming velocities, and stroke averaged suspension response zeta coefficients for tuning of suspension systems.

Enter User key here:


ReStackor Pro basic features: Compute the deflection and stiffness of shim stacks; and damping force of shock absorbers.

ReStackor Suspension Response: Suspension bottoming velocity, stroke averaged zeta coefficients and suspension tuning parameters. Suspension response add-on functions require a ReStackor pro license to be installed before purchasing the suspension response functions.

User License Agreement

You can:

  • Purchasing a user licensee permits you to run an unlimited number of cases on a single machine. 

  • Design suspension systems for hire or run cases for your friends. 

  • Publish results of calculations on the net

    • For net publications all we ask is appropriate credit be given to

You can not:

  • You can not install the software on a second machine, give away copies of the code or implement interfaces allowing unlicensed users to run the software.

ReStackor Warranty: 

ReStackor attempts to relate the vague concepts of suspension ride, feel and behavior to the cold harsh numerics of math and physics. On that boundary of math, emotion, suspension feel and physics:

  • There aren't any guarantees

    • If that is beyond your comfort zone, back out now

  • There is no warranty

    • If that is beyond your comfort zone, back out now

  • There is no support

    • If that is beyond your comfort zone, back out now

  • There is only sweat and hard work

    • If that is beyond your comfort zone, back out now

For those willing to cowboy on in the relentless effort to develop suspension systems pushing beyond the state-of-the-art:

  • ReStackor can help.