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M12 Shoulder Nut for NA Miata Koni Shocks

NA Miata Koni Shock Nuts

21030211 - FCM-NUT-SHLDR-M12

Priced EACH

  • Will NOT work with 1999-2005 NB Miata Shocks! The shank and threaded portion of the shock shaft is too long for proper thread engagement. Those are found here
  • Designed to fasten 99-05 Mazda Miata shock hats to 90-97 Miata shocks with an M12 thread with supporting hardware
  • M12x1.25 thread
  • 29.50mm shank length
  • 37.50mm overall height
  • 14mm shank diameter
  • zinc-plated

  • Availability: Normally in-stock
    Shipping: In-Stock Items ship USPS Priority unless noted otherwise
    Pricing: $13.00
    5 1


    Our USA made, custom built M12 shoulder nuts are used in our Mazda Miata Shock Mount Systems and are designed to thread onto Koni Sport shocks which have an M12 threaded shaft end. These shoulder nuts allow you to use 1990-1997 NA Mazda Miata shocks with 1999-2005 NB Mazda Miata shock hats, specific to Koni Sport shocks. NA Miata shocks have a shorter shock body and less length on the threaded portion, which makes installing the NB shock mounts difficult as the bump stop doesn't allow the threaded portion of the shaft to protrude the shock hat like the NB shocks would. These shoulder nuts will plunge into the shock hat and allow you to connect with the NA shock shaft.


    • 21030211 - FCM-NUT-SHLDR-M12
    • 21030211
    • 5X Racing
    • Normally in-stock
    • New

    Shipping Information

    • Item Requires Shipping
    • 0.2 lbs.
    • W4.0000” x H2.0000” x L8.0000”
    • In-Stock Items ship USPS Priority unless noted otherwise

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