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Mazdaspeed Miata Axle info

 
Old 10-02-2017, 10:36 PM
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Default Mazdaspeed Miata Axle info

I hope this is good enough to become a sticky. I searched hard and did not find this info anywhere.

The 2004-2005 mazdaspeed miata was produced in small numbers. There were several things that made the msm stand out from the other miatas of the time. We all think about the turbo or the diff. But one thing most people don't think about is the axles for the diff. Take a look at ebay you will find a sea of msm diffs for sale but no axles. Even here the same issue is present. When you look up axles for a msm you get the whole "fits" msm thing that vendors like to do when they assume it will work. I ordered a set from Oriles and Advanced with the key term "fits" msm and neither fit.

So whats the deal?
There are simply no aftermarket msm axles available. Mazda sold some for a while but has since stopped, they even sold rebuild parts.

Here are the differences. Note: The side going into the diff is the only side with differences.






I have sent a msm axle to the driveshaft shop, they are hoping to start producing axles. I will update you guys when they tell me more.
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Old 10-03-2017, 12:48 AM
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To contribute to this thread, I give you a cross sectional view of a MSM axle...



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Old 10-03-2017, 04:55 AM
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In for replacement axles as I may need some one day. I'd always figured there are enough places that make custom half shafts that I could probably get some made but might be a bit expensive for just one set. I think the inner CV joints might be the same as the Honda S2000 as they share the same differentials but never really checked it out. Probably have the same issue with the turbo SE's they sold in Australia and the factory Japanese versions too if they used the same axles which I assume they would have.
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Old 10-03-2017, 11:19 AM
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Mike @ MFactory hinted that there was something probably aftermarket or off the shelf that might work due to the relationship with the S2000. He didn't really go into much detail because of vendor status.
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Old 10-18-2017, 11:14 PM
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So I have an update on this. The Driveshaft Shop said they can make these. I am sending them my spare msm diff so they can make it perfect. So hopefully soon we will see the first set.
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Old 01-16-2018, 09:00 AM
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Default Update?

Any update from the Driveshaft Shop? I'm also looking for replacement mazdaspeed axles.
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Old 02-21-2018, 10:57 PM
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Originally Posted by Duckcrossing View Post
Any update from the Driveshaft Shop? I'm also looking for replacement mazdaspeed axles.
They have finished heat treating the first batch. Once they are done testing those, we should see them up for sale. I'll post a link when they send it to me. They have been giving me updates periodically.
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Old 02-22-2018, 01:34 AM
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As far as I understand the guts of the dif are S2000 torsen. If this is correct is there a source for the housings?
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Old 02-22-2018, 08:43 AM
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Originally Posted by jacob300zx View Post
As far as I understand the guts of the dif are S2000 torsen. If this is correct is there a source for the housings?
Yeah, mazda miata.

The s2k sourced a lot of the diff from Mazda IIRC.
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Old 02-23-2018, 10:44 PM
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Sub'd
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Old 03-14-2018, 10:58 AM
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Alright everyone, The Driveshaft Shop now has built axles for the msm diff.

Here is the link:
The Driveshaft Shop | 2004-2005 MazdaSpeed Miata Level 2 400HP axles (Mazdaspeed cars Only)
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Old 03-14-2018, 10:36 PM
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Ouch!
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