Hi,

Does anyone know the specs for the R3 ARB's? I searched online but couldn't find them. Different or same as other S2 models?

Thanks

 

Pretty sure the front bar is the same for all S2 models. The rear bar appears to be different for the R3. I base this based on information on Jim Ellis Mazda's website: https://www.jimellismazdaparts.com/c...X-8-parts.html.

As for the actual spec's, unfortunately, I don't have those. I could measure the diameter of the bars on my R3 if that's of any use.

Post 14 here (https://forum.miata.net/vb/showthread.php?t=672952) appears to have some specs for some of the RX8 bars.

 

Other than building a fixture to directly test and compare measured rates you’d have to destroy cutting them apart to measure wall thicknesses. I never saw where Mazda ever posted both the ID/OD values though. Somebody did the fixture and tested some of the S1 and aftermarket bars a long time ago. Never saw anything for the S2 bars.

You can get a feel for the wall thickness by measuring the thickness at the bar ends where they were pressed together for mounting the end link and dividing by 2, but it leads to some uncertainty on accuracy.

.

 

Thanks for the information and tips. I'll post updates when I measure them.

 

According to the Mazda 2011 specification sheet all RX-8s had the same diameter sway bars: 26.5 mm front and 16.0 mm rear.