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5X Racing NB Shock Hat on NA Shock Adapter Kit

Miata Shock Hat Adapter Kit

23993290 - 5XRNBSHCK

This kit is designed to adapt NB shock hats onto NA shocks. IT WILL NOT WORK FOR NB SHOCKS! (use this kit for that). THIS KIT DOES NOT COME WITH BUMP STOPS EITHER! (use this kit for that)

Our kits use all proprietary 5X Racing hardware and include:

  • 4 - M10 or M12 (Koni) 5XR NA Miata style shoulder nuts
  • 4 - Top Washers
  • 4 - 5XR/Fat Cat MCU Upper Shock Mount Bushings
  • 4 - 5XR/Fat Cat MCU Lower Shock Mount Bushings
  • 4 - 5XR Aluminum Lower Perch Washers

    The pieces of this kit can be purchased individually in the Custom Bumpstops and Shock Mount Kits category

  • Availability: Normally in-stock
    Pricing: $85.00

    Customize Your Item

    - Koni Sport Shocks? -
     * required
    - Add Shock Hats? -
     * required


    This kit is designed to allow the installation of the superior 1999-2005 NB shock hats on 1990-1997 NA Miatas. Installing NB shock hats on an NA (using the NA shocks) will provide about a 3/4" drop in ride height - but 3/4" more gain in shock travel - which is perfect for some drivers looking for a better looking stance with the stock spring rates. Add in our high performance MCU (micro-cellular urethane) shock mount bushings and you'll also improve handling and noise isolation performance over the OEM rubber bushings that are originally installed on the NB shock hat system

    This kit is essentially our 5XR non-coilover shock mount kit minus the bump stops. We wholeheartedly recommend our shock mount kit to completely transform your shock mounting setup using our fantastic bump stop selection, but understand there is a desire for tuners to just need the equipment to mount NB shock hats to NA's, or to improve the quality of the OEM shock mount bushing setup. If doing this, please be aware that you will need to provide your own bump stops to make a complete kit. This kit does not come with bump stops!

    This kit WILL NOT WORK with 1999-2005 NB shocks because the thickness of the MCU shock mount bushings in this kit are not the same as the OEM NB rubber shock mount bushings, and the shoulder nuts will run down onto the unthreaded portion of the NB shock shaft. If you need to replace the aged rubber bushings on your 1999-2005 NB Miata, check out this kit:



    • 23993290 - 5XRNBSHCK
    • 23993290
    • 5X Racing
    • Normally in-stock
    • New

    Shipping Information

    • Item Requires Shipping
    • 1.0 lbs.
    • W5.0000” x H2.0000” x L10.0000”

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