WHich is better and why?

 

That's a great but loaded question...I gather that if everything on your 8 is stock, then the Autoexe brace is the better option because of the additional underbody rigigity, but what if other options have been applied like front and back tower struts, coilovers, tyres/rims. etc.? So where's the best option now? Isn't it a function of the total kit on the 8 and not just a piece or two?

 

These two theads should help since they both have pics.

https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/mazdaspeed-sub-frame-braces-install-38438/ (MazdaSpeed)

https://www.rx8club.com/series-i-do-yourself-forum-73/diy-autoexe-member-brace-61120/ (AutoExe)

The MS brace has 4 attachment points / Autoxe 12
The MS brace also cost more.

 

It looks like the auto exe just replaces the cross members and the ms is a separete peice. Can both be used ?

 

Looking at the way the MS braces is installed I think both might fit. But $1,400 for sub-frame braces

 

As sputnik said....go for triangles to realize brace and/or strut strength...the underbody autoexe braces nicely apopt that approach while the MS braces do not. However, both MS and autoexe have upper 4-pt tower struts in front with brake stopper.

 

>However, both MS and autoexe have upper 4-pt tower struts in front with brake stopper.

I thought the MS 4 point struts bar won't fit the N.A. left-hand drive car, right?!

 

It's available now, someone on this board got it.

 

where oh where can I get one

 

i believe the 4 pt does fit no N.A. 8s but you just cant have the master cylinder attached

 

So, what's the answer?? Does the MazdaSpeed 4 point fits N.A. RX-8 or not?!!?

The other alternative I can think of is the one made by AutoExe. But I'm not sure if anyone in the N.A. have tried to put one on or not.
http://www.specr.com.sg/

 

Someone in another thread posted a picture, but I haven't got an answer to the question of whether or not its a one-off or if its actually an available item.

jds

 

i would go auto exe, more bang for the buck IMO....plus its read....c'mon that right there means more power!