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NA/NB Billet Enduro Rear Hub Installation

Thank you for your purchase of Billet Enduro Miata Rear Hubs!  These are the biggest, baddest hubs ever created for the Miata platform.  We at MiataHubs.com stand behind our product 100%. If you have a question or issue please contact us ASAP.  Please be sure to read this entire set of installation instructions through to the end.  Ensure the axle nut stays torqued to our list specification at a minimum!  Read that part again, ensure the axle nut is torqued check it regularly with a torque wrench.

 

225 ft-lb for 29 mm rear axle nut

250 ft-lb for 32 mm rear axle nut

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Installation guidelines - CONTACT US WITH any COMMENTS, QUESTIONS OR CONCERNS

ALWAYS Use a new Mazda OEM rear spindle nut for your year of Miata.  2003 & up Miatas or cars running 2003+ rear axles do not use a dust seal as the axle taper is not compatible. Do not install one.  

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  1. For now we are referencing this how to guide on the forums (copied at the end of this guide for your reference). Key things to note:

    • The use of a press is required

    • Use an old bearing or proper press adapter to only apply pressure to the outer race of the new bearing when installing. 

    • When pressing in the hub, support the inner race on in the inside side of the bearing or you will ruin your new bearing. 

 

  2. IMPORTANT. Install a NEW OEM Mazda axle nut and torque the nut to the 

final spec appropriate for your car/parts. Recheck the torque before/after track sessions. 

 

225 ft-lb for 29 mm rear axle nut

250 ft-lb for 32 mm rear axle nut

 

  3. IMPORTANT. Fully stake the new axle nut to the slot in the spindle using a broad tipped chisel or punch and a hammer. YOU MUST CHECK THE NUT TORQUE. We have seen poorly staked nuts loosen in the past.  It is recommended that you CHECK THIS NUT TORQUE ROUTINELY, to ensure it stays tight, if anything ever starts to feel odd on track, this is the first place to look. 

 

  4. As always, routine inspection of all wear items is your responsibility and of utmost importance. Hubs and bearings are critical safety items and should remain on the list of things to check at the track and in the shop.  Things you should check include but are not limited to the spindle nut torque, hub flange for fatigue.

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IMPORTANT NOTE. If you are installing rear hubs it is recommended that you pay VERY close attention to the hubs & bearings at all times and through continued inspection & maintenance. If you notice any unusual sounds or feelings, IMMEDIATELY come into the pits and check for proper nut torque and bearing play. If you find a problem, please contact us.

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Thanks again for your purchase and support of Miatahubs.com as we work to better the Miata community and make this chassis the best thing on racetracks worldwide, winning races and breaking hearts of higher dollar competitors. Feel free to call or text us with any questions or concerns, during install or at the track. 

 

JUSTIN

miatahubs@gmail.com

Please leave a voicemail or text if we don’t pick up!


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The following material is borrowed from Miata.net as a reference - see the full thread for upright removal steps. There are 20 steps, read them ALL twice through before installing.  https://forum.miata.net/vb/showthread.php?p=8208437&mode=threaded#post8208437

 

-> Rear hub and bearing replacement by millsj  ----------------------------------------------------------------------

After a recent near disaster at the track (see below) when one of my front hubs failed, I have decided to replace the rears as part of my routine maintenance. The front hubs are pretty straightforward to replace, but the rears are a little more involved and access to a press will make life easier. Not many people are replacing the rear bearings or hubs, but hopefully this will help someone down the road.

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16. Remove the clip holding the bearing in place. Be careful because the clip can launch across the room.


17. Now you need to remove the bearing from the upright. This was the biggest headache for me. The bearing did not want to be set free. I forgot to take a picture of the final arrangement on the press, but I can show you with two pictures. I used a piece of pipe (silver) to support the bottom of the bearing/upright.


I used a pipe fitting on the top side of the bearing/upright. In the picture, the upright is upside down from the correct orientation. The picture above shows the correct positioning. Prior to actually getting the bearing to move, I gave it more than a few good hits with a hammer with no affect. Finally, the press combined with some heat got it to move.

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Once the bearing was flush with the lip on the upright (this will make more sense when you see it in person), I supported the upright like this and pressed the bearing completely out.

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18. Reassembly is the reverse order. I kept the new bearing in the freezer for a day or so prior to re-installation. I also heated the upright (where the bearing sits) with my heat gun and then went to work with the press. The new bearing went in easily. I placed the old bearing between the new bearing and the press so I would not damage the new one. This method worked well.

 

19. Reinstall the clip

 

20. IMPORTANT STEP!  Press the hub back into the upright. - FULLY SUPPORT THE INSIDE RACE OR YOU WILL RUIN YOUR NEW BEARING

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Warranty Disclaimer Miata Hubs LLC products and parts are sold “as is” without any expressed or implied warranty of merchantability or fitness for a particular purpose. Miata Hubs LLC shall not, under any circumstances, be liable for any special, incidental or consequential damages, including, person, party, or property, but not limited to, damage, or loss of property or equipment, loss of profits or revenue, cost of purchased or replacement goods, or claims of customers of the purchase, which may arise and/or result from sale, installation or use of these parts. Should such products or parts prove defective following their purchase, the buyer and not the manufacturer, distributor(s), or retailer(s); assume the entire cost of all necessary services or repair as result of a part(s) failure. Installation of these parts could adversely affect the original manufacturer’s warranty coverage. This part is intended for off road use only and is recommended to be installed by a professional.

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