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5X Racing NB Miata DIY Track Day Coilover Kit

Miata Track Day Coilover Kit

23993504 - 5XR-NB-DIYCOK-TD

Our hand picked Bilstein based coilover kit was created using the research and expertise of Fat Cat Motorsports to achieve the perfect "flat ride"!

The kit is sold in individual piece form for the true DIY'ers out there that enjoy building their own stuff, or in pre-assembled bolt-in ready form for an additional $200 (cost includes brand new OEM NB shock hats) by selecting the option using the drop-down menu.

Check out the info below for all of the details

Shipping: Not eligible for Free Shipping. UPS Ground Standard
Pricing: $1,200.00

Customize Your Item

- Pre-Assembly? -
 * required


Our specially packaged Track Day Kit includes:

  • qty 2 of 24-065504 Bilstein B8 NB Front shocks
  • qty 2 of 24-065511 Bilstein B8 NB Rear shocks
  • qty 2 of 7" length 550in/lb Front Eibach race springs
  • qty 2 of 7" length 400in/lb Rear Eibach race springs
  • qty 1 of 5X Racing coilover sleeve and perch kit
  • qty 1 of 5X Racing coilover shock mount kit (shock mounting hardware and spring isolator)
  • qty 4 of 5X Racing 36mm Black (hard) for the front and Blue (medium) rear Bump Stops

If you're not sure on how to assemble this kit - or just want to make it easier on yourself - you can select the option to have us pre-assemble the coilover kit for you. Here is what you get and what we do for our special $100 pre-assembly option:

  • We prep the surface of the shock hat in which the Fat Cat spring isolator gets glued to. We also prep the surface of the isolator as it is very slick and can become separated from the shock hat if not made to adhere better. This ensures the isolator stays in position and does not separate over time
  • We then use a slight bead of silicone to seat the coilover sleeves to eliminate having them turn when you adjust your spring heights after they're installed
  • We properly install the 5X Racing Shock Mount Kit
  • Video instructions available on our YouTube Channel, or within the "Video Instructions" tab above

Video Overview

Video Instructions


  • 23993504 - 5XR-NB-DIYCOK-TD
  • 23993504
  • 5X Racing
  • New

Shipping Information

  • Item Requires Shipping
  • 30.0 lbs.
  • W10.0000” x H10.0000” x L18.0000”
  • Not eligible for Free Shipping. UPS Ground Standard

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